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Finding the Fourth Proportional to 5,565.56, 7,681.64 and 5,389.92

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Solution

The fourth proportional to 5,565.56, 7,681.64 and 5,389.92 is: 7,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,565.56 : 7,681.64 = 5,389.92 : x
  2. Step 2: Convert to fraction form
    5,565.56/7,681.64 = 5,389.92/x
  3. Step 3: Cross multiply
    5,565.56x = 7,681.64 × 5,389.92
  4. Step 4: Simplify right side
    5,565.56x = 41,403,398.12
  5. Step 5: Solve for x
    x = 41,403,398.12/5,565.56
  6. Step 6: Final answer
    x = 7,439.22

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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.