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Finding the Fourth Proportional to 3,527.87, 4,868.45 and 2,015.40

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Solution

The fourth proportional to 3,527.87, 4,868.45 and 2,015.40 is: 2,781.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,527.87 : 4,868.45 = 2,015.40 : x
  2. Step 2: Convert to fraction form
    3,527.87/4,868.45 = 2,015.40/x
  3. Step 3: Cross multiply
    3,527.87x = 4,868.45 × 2,015.40
  4. Step 4: Simplify right side
    3,527.87x = 9,811,874.13
  5. Step 5: Solve for x
    x = 9,811,874.13/3,527.87
  6. Step 6: Final answer
    x = 2,781.25

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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.