Home / 2,899.20-4,325.76-2,515.20

Finding the Fourth Proportional to 2,899.20, 4,325.76 and 2,515.20

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Solution

The fourth proportional to 2,899.20, 4,325.76 and 2,515.20 is: 3,752.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.20 : 4,325.76 = 2,515.20 : x
  2. Step 2: Convert to fraction form
    2,899.20/4,325.76 = 2,515.20/x
  3. Step 3: Cross multiply
    2,899.20x = 4,325.76 × 2,515.20
  4. Step 4: Simplify right side
    2,899.20x = 10,880,151.55
  5. Step 5: Solve for x
    x = 10,880,151.55/2,899.20
  6. Step 6: Final answer
    x = 3,752.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.