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Finding the Fourth Proportional to 5,005.64, 7,486.98 and 2,920.44

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Solution

The fourth proportional to 5,005.64, 7,486.98 and 2,920.44 is: 4,368.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,005.64 : 7,486.98 = 2,920.44 : x
  2. Step 2: Convert to fraction form
    5,005.64/7,486.98 = 2,920.44/x
  3. Step 3: Cross multiply
    5,005.64x = 7,486.98 × 2,920.44
  4. Step 4: Simplify right side
    5,005.64x = 21,865,275.87
  5. Step 5: Solve for x
    x = 21,865,275.87/5,005.64
  6. Step 6: Final answer
    x = 4,368.13

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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.