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Finding the Fourth Proportional to 7,011.51, 9,688.17 and 5,606.79

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Solution

The fourth proportional to 7,011.51, 9,688.17 and 5,606.79 is: 7,747.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.51 : 9,688.17 = 5,606.79 : x
  2. Step 2: Convert to fraction form
    7,011.51/9,688.17 = 5,606.79/x
  3. Step 3: Cross multiply
    7,011.51x = 9,688.17 × 5,606.79
  4. Step 4: Simplify right side
    7,011.51x = 54,319,534.67
  5. Step 5: Solve for x
    x = 54,319,534.67/7,011.51
  6. Step 6: Final answer
    x = 7,747.19

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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.