Home / 8,705.20-12,010.26-5,166.40

Finding the Fourth Proportional to 8,705.20, 12,010.26 and 5,166.40

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Solution

The fourth proportional to 8,705.20, 12,010.26 and 5,166.40 is: 7,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.20 : 12,010.26 = 5,166.40 : x
  2. Step 2: Convert to fraction form
    8,705.20/12,010.26 = 5,166.40/x
  3. Step 3: Cross multiply
    8,705.20x = 12,010.26 × 5,166.40
  4. Step 4: Simplify right side
    8,705.20x = 62,049,807.26
  5. Step 5: Solve for x
    x = 62,049,807.26/8,705.20
  6. Step 6: Final answer
    x = 7,127.90

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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.