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Finding the Fourth Proportional to 1,746.12, 2,619.59 and 772.50

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Solution

The fourth proportional to 1,746.12, 2,619.59 and 772.50 is: 1,158.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,746.12 : 2,619.59 = 772.50 : x
  2. Step 2: Convert to fraction form
    1,746.12/2,619.59 = 772.50/x
  3. Step 3: Cross multiply
    1,746.12x = 2,619.59 × 772.50
  4. Step 4: Simplify right side
    1,746.12x = 2,023,633.28
  5. Step 5: Solve for x
    x = 2,023,633.28/1,746.12
  6. Step 6: Final answer
    x = 1,158.93

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.