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Finding the Fourth Proportional to 2,900.87, 4,000.26 and 2,482.61

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Solution

The fourth proportional to 2,900.87, 4,000.26 and 2,482.61 is: 3,423.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.87 : 4,000.26 = 2,482.61 : x
  2. Step 2: Convert to fraction form
    2,900.87/4,000.26 = 2,482.61/x
  3. Step 3: Cross multiply
    2,900.87x = 4,000.26 × 2,482.61
  4. Step 4: Simplify right side
    2,900.87x = 9,931,085.48
  5. Step 5: Solve for x
    x = 9,931,085.48/2,900.87
  6. Step 6: Final answer
    x = 3,423.49

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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.