Home / 2,762.28-4,143.17-1,720.21

Finding the Fourth Proportional to 2,762.28, 4,143.17 and 1,720.21

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Solution

The fourth proportional to 2,762.28, 4,143.17 and 1,720.21 is: 2,580.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.28 : 4,143.17 = 1,720.21 : x
  2. Step 2: Convert to fraction form
    2,762.28/4,143.17 = 1,720.21/x
  3. Step 3: Cross multiply
    2,762.28x = 4,143.17 × 1,720.21
  4. Step 4: Simplify right side
    2,762.28x = 7,127,129.78
  5. Step 5: Solve for x
    x = 7,127,129.78/2,762.28
  6. Step 6: Final answer
    x = 2,580.16

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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.