Home / 1,931.46-2,665.40-1,047.26

Finding the Fourth Proportional to 1,931.46, 2,665.40 and 1,047.26

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Solution

The fourth proportional to 1,931.46, 2,665.40 and 1,047.26 is: 1,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.46 : 2,665.40 = 1,047.26 : x
  2. Step 2: Convert to fraction form
    1,931.46/2,665.40 = 1,047.26/x
  3. Step 3: Cross multiply
    1,931.46x = 2,665.40 × 1,047.26
  4. Step 4: Simplify right side
    1,931.46x = 2,791,348.24
  5. Step 5: Solve for x
    x = 2,791,348.24/1,931.46
  6. Step 6: Final answer
    x = 1,445.20

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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.