Home / 2,851.20-4,276.80-2,516.40

Finding the Fourth Proportional to 2,851.20, 4,276.80 and 2,516.40

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Solution

The fourth proportional to 2,851.20, 4,276.80 and 2,516.40 is: 3,774.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.20 : 4,276.80 = 2,516.40 : x
  2. Step 2: Convert to fraction form
    2,851.20/4,276.80 = 2,516.40/x
  3. Step 3: Cross multiply
    2,851.20x = 4,276.80 × 2,516.40
  4. Step 4: Simplify right side
    2,851.20x = 10,762,139.52
  5. Step 5: Solve for x
    x = 10,762,139.52/2,851.20
  6. Step 6: Final answer
    x = 3,774.60

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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.