Home / 4,785.51-7,178.82-1,275.57

Finding the Fourth Proportional to 4,785.51, 7,178.82 and 1,275.57

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Solution

The fourth proportional to 4,785.51, 7,178.82 and 1,275.57 is: 1,913.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.51 : 7,178.82 = 1,275.57 : x
  2. Step 2: Convert to fraction form
    4,785.51/7,178.82 = 1,275.57/x
  3. Step 3: Cross multiply
    4,785.51x = 7,178.82 × 1,275.57
  4. Step 4: Simplify right side
    4,785.51x = 9,157,051.53
  5. Step 5: Solve for x
    x = 9,157,051.53/4,785.51
  6. Step 6: Final answer
    x = 1,913.50

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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.