Home / 3,125.28-4,312.86-1,728.02

Finding the Fourth Proportional to 3,125.28, 4,312.86 and 1,728.02

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Solution

The fourth proportional to 3,125.28, 4,312.86 and 1,728.02 is: 2,384.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.28 : 4,312.86 = 1,728.02 : x
  2. Step 2: Convert to fraction form
    3,125.28/4,312.86 = 1,728.02/x
  3. Step 3: Cross multiply
    3,125.28x = 4,312.86 × 1,728.02
  4. Step 4: Simplify right side
    3,125.28x = 7,452,708.34
  5. Step 5: Solve for x
    x = 7,452,708.34/3,125.28
  6. Step 6: Final answer
    x = 2,384.65

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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.