Home / 2,981.13-4,472.16-900.87

Finding the Fourth Proportional to 2,981.13, 4,472.16 and 900.87

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Solution

The fourth proportional to 2,981.13, 4,472.16 and 900.87 is: 1,351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.13 : 4,472.16 = 900.87 : x
  2. Step 2: Convert to fraction form
    2,981.13/4,472.16 = 900.87/x
  3. Step 3: Cross multiply
    2,981.13x = 4,472.16 × 900.87
  4. Step 4: Simplify right side
    2,981.13x = 4,028,834.78
  5. Step 5: Solve for x
    x = 4,028,834.78/2,981.13
  6. Step 6: Final answer
    x = 1,351.45

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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.