Home / 3,715.40-5,571.12-2,490.68

Finding the Fourth Proportional to 3,715.40, 5,571.12 and 2,490.68

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Solution

The fourth proportional to 3,715.40, 5,571.12 and 2,490.68 is: 3,734.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.40 : 5,571.12 = 2,490.68 : x
  2. Step 2: Convert to fraction form
    3,715.40/5,571.12 = 2,490.68/x
  3. Step 3: Cross multiply
    3,715.40x = 5,571.12 × 2,490.68
  4. Step 4: Simplify right side
    3,715.40x = 13,875,877.16
  5. Step 5: Solve for x
    x = 13,875,877.16/3,715.40
  6. Step 6: Final answer
    x = 3,734.69

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1.5x scale

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.