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Finding the Fourth Proportional to 6,404.79, 8,839.11 and 3,573.06

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Solution

The fourth proportional to 6,404.79, 8,839.11 and 3,573.06 is: 4,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,404.79 : 8,839.11 = 3,573.06 : x
  2. Step 2: Convert to fraction form
    6,404.79/8,839.11 = 3,573.06/x
  3. Step 3: Cross multiply
    6,404.79x = 8,839.11 × 3,573.06
  4. Step 4: Simplify right side
    6,404.79x = 31,582,670.38
  5. Step 5: Solve for x
    x = 31,582,670.38/6,404.79
  6. Step 6: Final answer
    x = 4,931.10

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Half scale
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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.