Home / 10,387.20-15,580.80-4,838.70

Finding the Fourth Proportional to 10,387.20, 15,580.80 and 4,838.70

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Solution

The fourth proportional to 10,387.20, 15,580.80 and 4,838.70 is: 7,258.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.20 : 15,580.80 = 4,838.70 : x
  2. Step 2: Convert to fraction form
    10,387.20/15,580.80 = 4,838.70/x
  3. Step 3: Cross multiply
    10,387.20x = 15,580.80 × 4,838.70
  4. Step 4: Simplify right side
    10,387.20x = 75,390,816.96
  5. Step 5: Solve for x
    x = 75,390,816.96/10,387.20
  6. Step 6: Final answer
    x = 7,258.05

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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.