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Finding the Fourth Proportional to 8,866.46, 12,235.98 and 5,090.31

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Solution

The fourth proportional to 8,866.46, 12,235.98 and 5,090.31 is: 7,024.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.46 : 12,235.98 = 5,090.31 : x
  2. Step 2: Convert to fraction form
    8,866.46/12,235.98 = 5,090.31/x
  3. Step 3: Cross multiply
    8,866.46x = 12,235.98 × 5,090.31
  4. Step 4: Simplify right side
    8,866.46x = 62,284,931.35
  5. Step 5: Solve for x
    x = 62,284,931.35/8,866.46
  6. Step 6: Final answer
    x = 7,024.78

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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.