Home / 2,720.23-3,753.90-1,478.23

Finding the Fourth Proportional to 2,720.23, 3,753.90 and 1,478.23

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Solution

The fourth proportional to 2,720.23, 3,753.90 and 1,478.23 is: 2,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.23 : 3,753.90 = 1,478.23 : x
  2. Step 2: Convert to fraction form
    2,720.23/3,753.90 = 1,478.23/x
  3. Step 3: Cross multiply
    2,720.23x = 3,753.90 × 1,478.23
  4. Step 4: Simplify right side
    2,720.23x = 5,549,127.60
  5. Step 5: Solve for x
    x = 5,549,127.60/2,720.23
  6. Step 6: Final answer
    x = 2,039.95

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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.