Home / 2,851.50-4,278.96-1,120.62

Finding the Fourth Proportional to 2,851.50, 4,278.96 and 1,120.62

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Solution

The fourth proportional to 2,851.50, 4,278.96 and 1,120.62 is: 1,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.50 : 4,278.96 = 1,120.62 : x
  2. Step 2: Convert to fraction form
    2,851.50/4,278.96 = 1,120.62/x
  3. Step 3: Cross multiply
    2,851.50x = 4,278.96 × 1,120.62
  4. Step 4: Simplify right side
    2,851.50x = 4,795,088.16
  5. Step 5: Solve for x
    x = 4,795,088.16/2,851.50
  6. Step 6: Final answer
    x = 1,681.60

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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.