Home / 2,931.28-4,394.96-1,615.66

Finding the Fourth Proportional to 2,931.28, 4,394.96 and 1,615.66

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Solution

The fourth proportional to 2,931.28, 4,394.96 and 1,615.66 is: 2,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.28 : 4,394.96 = 1,615.66 : x
  2. Step 2: Convert to fraction form
    2,931.28/4,394.96 = 1,615.66/x
  3. Step 3: Cross multiply
    2,931.28x = 4,394.96 × 1,615.66
  4. Step 4: Simplify right side
    2,931.28x = 7,100,731.02
  5. Step 5: Solve for x
    x = 7,100,731.02/2,931.28
  6. Step 6: Final answer
    x = 2,422.40

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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.