Home / 8,688.95-13,001.12-5,180.86

Finding the Fourth Proportional to 8,688.95, 13,001.12 and 5,180.86

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Solution

The fourth proportional to 8,688.95, 13,001.12 and 5,180.86 is: 7,752.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.95 : 13,001.12 = 5,180.86 : x
  2. Step 2: Convert to fraction form
    8,688.95/13,001.12 = 5,180.86/x
  3. Step 3: Cross multiply
    8,688.95x = 13,001.12 × 5,180.86
  4. Step 4: Simplify right side
    8,688.95x = 67,356,982.56
  5. Step 5: Solve for x
    x = 67,356,982.56/8,688.95
  6. Step 6: Final answer
    x = 7,752.03

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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.