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Finding the Fourth Proportional to 7,001.70, 9,655.98 and 4,639.74

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Solution

The fourth proportional to 7,001.70, 9,655.98 and 4,639.74 is: 6,398.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,001.70 : 9,655.98 = 4,639.74 : x
  2. Step 2: Convert to fraction form
    7,001.70/9,655.98 = 4,639.74/x
  3. Step 3: Cross multiply
    7,001.70x = 9,655.98 × 4,639.74
  4. Step 4: Simplify right side
    7,001.70x = 44,801,236.65
  5. Step 5: Solve for x
    x = 44,801,236.65/7,001.70
  6. Step 6: Final answer
    x = 6,398.62

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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.