Home / 8,459.10-12,688.56-2,615.76

Finding the Fourth Proportional to 8,459.10, 12,688.56 and 2,615.76

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Solution

The fourth proportional to 8,459.10, 12,688.56 and 2,615.76 is: 3,923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.10 : 12,688.56 = 2,615.76 : x
  2. Step 2: Convert to fraction form
    8,459.10/12,688.56 = 2,615.76/x
  3. Step 3: Cross multiply
    8,459.10x = 12,688.56 × 2,615.76
  4. Step 4: Simplify right side
    8,459.10x = 33,190,227.71
  5. Step 5: Solve for x
    x = 33,190,227.71/8,459.10
  6. Step 6: Final answer
    x = 3,923.61

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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.