Home / 1,400.40-1,931.04-1,150.92

Finding the Fourth Proportional to 1,400.40, 1,931.04 and 1,150.92

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Solution

The fourth proportional to 1,400.40, 1,931.04 and 1,150.92 is: 1,587.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.40 : 1,931.04 = 1,150.92 : x
  2. Step 2: Convert to fraction form
    1,400.40/1,931.04 = 1,150.92/x
  3. Step 3: Cross multiply
    1,400.40x = 1,931.04 × 1,150.92
  4. Step 4: Simplify right side
    1,400.40x = 2,222,472.56
  5. Step 5: Solve for x
    x = 2,222,472.56/1,400.40
  6. Step 6: Final answer
    x = 1,587.03

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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.