Home / 6,438.16-9,663.30-4,248.40

Finding the Fourth Proportional to 6,438.16, 9,663.30 and 4,248.40

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Solution

The fourth proportional to 6,438.16, 9,663.30 and 4,248.40 is: 6,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.16 : 9,663.30 = 4,248.40 : x
  2. Step 2: Convert to fraction form
    6,438.16/9,663.30 = 4,248.40/x
  3. Step 3: Cross multiply
    6,438.16x = 9,663.30 × 4,248.40
  4. Step 4: Simplify right side
    6,438.16x = 41,053,563.72
  5. Step 5: Solve for x
    x = 41,053,563.72/6,438.16
  6. Step 6: Final answer
    x = 6,376.60

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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.