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Finding the Fourth Proportional to 8,039.10, 12,030.30 and 7,010.40

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Solution

The fourth proportional to 8,039.10, 12,030.30 and 7,010.40 is: 10,490.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,039.10 : 12,030.30 = 7,010.40 : x
  2. Step 2: Convert to fraction form
    8,039.10/12,030.30 = 7,010.40/x
  3. Step 3: Cross multiply
    8,039.10x = 12,030.30 × 7,010.40
  4. Step 4: Simplify right side
    8,039.10x = 84,337,215.12
  5. Step 5: Solve for x
    x = 84,337,215.12/8,039.10
  6. Step 6: Final answer
    x = 10,490.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.