Home / 8,709.31-12,011.40-5,876.20

Finding the Fourth Proportional to 8,709.31, 12,011.40 and 5,876.20

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Solution

The fourth proportional to 8,709.31, 12,011.40 and 5,876.20 is: 8,104.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.31 : 12,011.40 = 5,876.20 : x
  2. Step 2: Convert to fraction form
    8,709.31/12,011.40 = 5,876.20/x
  3. Step 3: Cross multiply
    8,709.31x = 12,011.40 × 5,876.20
  4. Step 4: Simplify right side
    8,709.31x = 70,581,388.68
  5. Step 5: Solve for x
    x = 70,581,388.68/8,709.31
  6. Step 6: Final answer
    x = 8,104.13

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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.