Home / 1,439.32-2,161.16-999.48

Finding the Fourth Proportional to 1,439.32, 2,161.16 and 999.48

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Solution

The fourth proportional to 1,439.32, 2,161.16 and 999.48 is: 1,500.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.32 : 2,161.16 = 999.48 : x
  2. Step 2: Convert to fraction form
    1,439.32/2,161.16 = 999.48/x
  3. Step 3: Cross multiply
    1,439.32x = 2,161.16 × 999.48
  4. Step 4: Simplify right side
    1,439.32x = 2,160,036.20
  5. Step 5: Solve for x
    x = 2,160,036.20/1,439.32
  6. Step 6: Final answer
    x = 1,500.73

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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.