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Finding the Fourth Proportional to 1,746.32, 2,619.72 and 513.82

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Solution

The fourth proportional to 1,746.32, 2,619.72 and 513.82 is: 770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,746.32 : 2,619.72 = 513.82 : x
  2. Step 2: Convert to fraction form
    1,746.32/2,619.72 = 513.82/x
  3. Step 3: Cross multiply
    1,746.32x = 2,619.72 × 513.82
  4. Step 4: Simplify right side
    1,746.32x = 1,346,064.53
  5. Step 5: Solve for x
    x = 1,346,064.53/1,746.32
  6. Step 6: Final answer
    x = 770.80

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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.