Home / 3,157.78-4,737.71-1,312.47

Finding the Fourth Proportional to 3,157.78, 4,737.71 and 1,312.47

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Solution

The fourth proportional to 3,157.78, 4,737.71 and 1,312.47 is: 1,969.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.78 : 4,737.71 = 1,312.47 : x
  2. Step 2: Convert to fraction form
    3,157.78/4,737.71 = 1,312.47/x
  3. Step 3: Cross multiply
    3,157.78x = 4,737.71 × 1,312.47
  4. Step 4: Simplify right side
    3,157.78x = 6,218,102.24
  5. Step 5: Solve for x
    x = 6,218,102.24/3,157.78
  6. Step 6: Final answer
    x = 1,969.14

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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.