Home / 8,657.15-11,948.13-5,121.50

Finding the Fourth Proportional to 8,657.15, 11,948.13 and 5,121.50

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Solution

The fourth proportional to 8,657.15, 11,948.13 and 5,121.50 is: 7,068.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.15 : 11,948.13 = 5,121.50 : x
  2. Step 2: Convert to fraction form
    8,657.15/11,948.13 = 5,121.50/x
  3. Step 3: Cross multiply
    8,657.15x = 11,948.13 × 5,121.50
  4. Step 4: Simplify right side
    8,657.15x = 61,192,288.05
  5. Step 5: Solve for x
    x = 61,192,288.05/8,657.15
  6. Step 6: Final answer
    x = 7,068.41

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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.