Home / 2,900.28-4,000.56-1,720.52

Finding the Fourth Proportional to 2,900.28, 4,000.56 and 1,720.52

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Solution

The fourth proportional to 2,900.28, 4,000.56 and 1,720.52 is: 2,373.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.28 : 4,000.56 = 1,720.52 : x
  2. Step 2: Convert to fraction form
    2,900.28/4,000.56 = 1,720.52/x
  3. Step 3: Cross multiply
    2,900.28x = 4,000.56 × 1,720.52
  4. Step 4: Simplify right side
    2,900.28x = 6,883,043.49
  5. Step 5: Solve for x
    x = 6,883,043.49/2,900.28
  6. Step 6: Final answer
    x = 2,373.23

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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.