Home / 1,439.29-2,160.12-746.17

Finding the Fourth Proportional to 1,439.29, 2,160.12 and 746.17

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Solution

The fourth proportional to 1,439.29, 2,160.12 and 746.17 is: 1,119.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.29 : 2,160.12 = 746.17 : x
  2. Step 2: Convert to fraction form
    1,439.29/2,160.12 = 746.17/x
  3. Step 3: Cross multiply
    1,439.29x = 2,160.12 × 746.17
  4. Step 4: Simplify right side
    1,439.29x = 1,611,816.74
  5. Step 5: Solve for x
    x = 1,611,816.74/1,439.29
  6. Step 6: Final answer
    x = 1,119.87

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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.