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Finding the Fourth Proportional to 5,656.68, 7,807.14 and 3,418.68

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Solution

The fourth proportional to 5,656.68, 7,807.14 and 3,418.68 is: 4,718.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.68 : 7,807.14 = 3,418.68 : x
  2. Step 2: Convert to fraction form
    5,656.68/7,807.14 = 3,418.68/x
  3. Step 3: Cross multiply
    5,656.68x = 7,807.14 × 3,418.68
  4. Step 4: Simplify right side
    5,656.68x = 26,690,113.38
  5. Step 5: Solve for x
    x = 26,690,113.38/5,656.68
  6. Step 6: Final answer
    x = 4,718.34

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.