Home / 1,548.19-2,319.95-931.22

Finding the Fourth Proportional to 1,548.19, 2,319.95 and 931.22

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Solution

The fourth proportional to 1,548.19, 2,319.95 and 931.22 is: 1,395.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.19 : 2,319.95 = 931.22 : x
  2. Step 2: Convert to fraction form
    1,548.19/2,319.95 = 931.22/x
  3. Step 3: Cross multiply
    1,548.19x = 2,319.95 × 931.22
  4. Step 4: Simplify right side
    1,548.19x = 2,160,374.57
  5. Step 5: Solve for x
    x = 2,160,374.57/1,548.19
  6. Step 6: Final answer
    x = 1,395.42

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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.