Home / 2,931.50-4,392.57-1,760.78

Finding the Fourth Proportional to 2,931.50, 4,392.57 and 1,760.78

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Solution

The fourth proportional to 2,931.50, 4,392.57 and 1,760.78 is: 2,638.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.50 : 4,392.57 = 1,760.78 : x
  2. Step 2: Convert to fraction form
    2,931.50/4,392.57 = 1,760.78/x
  3. Step 3: Cross multiply
    2,931.50x = 4,392.57 × 1,760.78
  4. Step 4: Simplify right side
    2,931.50x = 7,734,349.40
  5. Step 5: Solve for x
    x = 7,734,349.40/2,931.50
  6. Step 6: Final answer
    x = 2,638.36

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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.