Home / 9,630.20-13,280.28-6,438.08

Finding the Fourth Proportional to 9,630.20, 13,280.28 and 6,438.08

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Solution

The fourth proportional to 9,630.20, 13,280.28 and 6,438.08 is: 8,878.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,630.20 : 13,280.28 = 6,438.08 : x
  2. Step 2: Convert to fraction form
    9,630.20/13,280.28 = 6,438.08/x
  3. Step 3: Cross multiply
    9,630.20x = 13,280.28 × 6,438.08
  4. Step 4: Simplify right side
    9,630.20x = 85,499,505.06
  5. Step 5: Solve for x
    x = 85,499,505.06/9,630.20
  6. Step 6: Final answer
    x = 8,878.27

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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.