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Finding the Fourth Proportional to 7,666.55, 10,580.81 and 4,681.76

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Solution

The fourth proportional to 7,666.55, 10,580.81 and 4,681.76 is: 6,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.55 : 10,580.81 = 4,681.76 : x
  2. Step 2: Convert to fraction form
    7,666.55/10,580.81 = 4,681.76/x
  3. Step 3: Cross multiply
    7,666.55x = 10,580.81 × 4,681.76
  4. Step 4: Simplify right side
    7,666.55x = 49,536,736.71
  5. Step 5: Solve for x
    x = 49,536,736.71/7,666.55
  6. Step 6: Final answer
    x = 6,461.42

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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.