Home / 1,358.40-2,032.20-1,177.80

Finding the Fourth Proportional to 1,358.40, 2,032.20 and 1,177.80

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Solution

The fourth proportional to 1,358.40, 2,032.20 and 1,177.80 is: 1,762.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.40 : 2,032.20 = 1,177.80 : x
  2. Step 2: Convert to fraction form
    1,358.40/2,032.20 = 1,177.80/x
  3. Step 3: Cross multiply
    1,358.40x = 2,032.20 × 1,177.80
  4. Step 4: Simplify right side
    1,358.40x = 2,393,525.16
  5. Step 5: Solve for x
    x = 2,393,525.16/1,358.40
  6. Step 6: Final answer
    x = 1,762.02

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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.