Home / 1,534.40-2,301.60-1,121.30

Finding the Fourth Proportional to 1,534.40, 2,301.60 and 1,121.30

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Solution

The fourth proportional to 1,534.40, 2,301.60 and 1,121.30 is: 1,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.40 : 2,301.60 = 1,121.30 : x
  2. Step 2: Convert to fraction form
    1,534.40/2,301.60 = 1,121.30/x
  3. Step 3: Cross multiply
    1,534.40x = 2,301.60 × 1,121.30
  4. Step 4: Simplify right side
    1,534.40x = 2,580,784.08
  5. Step 5: Solve for x
    x = 2,580,784.08/1,534.40
  6. Step 6: Final answer
    x = 1,681.95

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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.