Home / 2,931.59-4,045.21-1,672.57

Finding the Fourth Proportional to 2,931.59, 4,045.21 and 1,672.57

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Solution

The fourth proportional to 2,931.59, 4,045.21 and 1,672.57 is: 2,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.59 : 4,045.21 = 1,672.57 : x
  2. Step 2: Convert to fraction form
    2,931.59/4,045.21 = 1,672.57/x
  3. Step 3: Cross multiply
    2,931.59x = 4,045.21 × 1,672.57
  4. Step 4: Simplify right side
    2,931.59x = 6,765,876.66
  5. Step 5: Solve for x
    x = 6,765,876.66/2,931.59
  6. Step 6: Final answer
    x = 2,307.92

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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.