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Finding the Fourth Proportional to 6,643.01, 9,904.95 and 6,402.90

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Solution

The fourth proportional to 6,643.01, 9,904.95 and 6,402.90 is: 9,546.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643.01 : 9,904.95 = 6,402.90 : x
  2. Step 2: Convert to fraction form
    6,643.01/9,904.95 = 6,402.90/x
  3. Step 3: Cross multiply
    6,643.01x = 9,904.95 × 6,402.90
  4. Step 4: Simplify right side
    6,643.01x = 63,420,358.77
  5. Step 5: Solve for x
    x = 63,420,358.77/6,643.01
  6. Step 6: Final answer
    x = 9,546.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.