Home / 2,931.40-4,393.23-1,371.28

Finding the Fourth Proportional to 2,931.40, 4,393.23 and 1,371.28

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Solution

The fourth proportional to 2,931.40, 4,393.23 and 1,371.28 is: 2,055.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.40 : 4,393.23 = 1,371.28 : x
  2. Step 2: Convert to fraction form
    2,931.40/4,393.23 = 1,371.28/x
  3. Step 3: Cross multiply
    2,931.40x = 4,393.23 × 1,371.28
  4. Step 4: Simplify right side
    2,931.40x = 6,024,348.43
  5. Step 5: Solve for x
    x = 6,024,348.43/2,931.40
  6. Step 6: Final answer
    x = 2,055.11

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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.