Home / 3,124.78-4,312.18-1,727.53

Finding the Fourth Proportional to 3,124.78, 4,312.18 and 1,727.53

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Solution

The fourth proportional to 3,124.78, 4,312.18 and 1,727.53 is: 2,383.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.78 : 4,312.18 = 1,727.53 : x
  2. Step 2: Convert to fraction form
    3,124.78/4,312.18 = 1,727.53/x
  3. Step 3: Cross multiply
    3,124.78x = 4,312.18 × 1,727.53
  4. Step 4: Simplify right side
    3,124.78x = 7,449,420.32
  5. Step 5: Solve for x
    x = 7,449,420.32/3,124.78
  6. Step 6: Final answer
    x = 2,383.98

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1.5x scale

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.