Home / 3,124.79-4,312.20-1,727.54

Finding the Fourth Proportional to 3,124.79, 4,312.20 and 1,727.54

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Solution

The fourth proportional to 3,124.79, 4,312.20 and 1,727.54 is: 2,384.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.79 : 4,312.20 = 1,727.54 : x
  2. Step 2: Convert to fraction form
    3,124.79/4,312.20 = 1,727.54/x
  3. Step 3: Cross multiply
    3,124.79x = 4,312.20 × 1,727.54
  4. Step 4: Simplify right side
    3,124.79x = 7,449,497.99
  5. Step 5: Solve for x
    x = 7,449,497.99/3,124.79
  6. Step 6: Final answer
    x = 2,384.00

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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.