Home / 1,442.38-1,985.30-1,277.26

Finding the Fourth Proportional to 1,442.38, 1,985.30 and 1,277.26

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Solution

The fourth proportional to 1,442.38, 1,985.30 and 1,277.26 is: 1,758.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.38 : 1,985.30 = 1,277.26 : x
  2. Step 2: Convert to fraction form
    1,442.38/1,985.30 = 1,277.26/x
  3. Step 3: Cross multiply
    1,442.38x = 1,985.30 × 1,277.26
  4. Step 4: Simplify right side
    1,442.38x = 2,535,744.28
  5. Step 5: Solve for x
    x = 2,535,744.28/1,442.38
  6. Step 6: Final answer
    x = 1,758.03

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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.