Home / 1,150.40-1,714.42-1,125.74

Finding the Fourth Proportional to 1,150.40, 1,714.42 and 1,125.74

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Solution

The fourth proportional to 1,150.40, 1,714.42 and 1,125.74 is: 1,677.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.40 : 1,714.42 = 1,125.74 : x
  2. Step 2: Convert to fraction form
    1,150.40/1,714.42 = 1,125.74/x
  3. Step 3: Cross multiply
    1,150.40x = 1,714.42 × 1,125.74
  4. Step 4: Simplify right side
    1,150.40x = 1,929,991.17
  5. Step 5: Solve for x
    x = 1,929,991.17/1,150.40
  6. Step 6: Final answer
    x = 1,677.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.