Home / 2,988.60-4,130.19-2,245.02

Finding the Fourth Proportional to 2,988.60, 4,130.19 and 2,245.02

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Solution

The fourth proportional to 2,988.60, 4,130.19 and 2,245.02 is: 3,102.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.60 : 4,130.19 = 2,245.02 : x
  2. Step 2: Convert to fraction form
    2,988.60/4,130.19 = 2,245.02/x
  3. Step 3: Cross multiply
    2,988.60x = 4,130.19 × 2,245.02
  4. Step 4: Simplify right side
    2,988.60x = 9,272,359.15
  5. Step 5: Solve for x
    x = 9,272,359.15/2,988.60
  6. Step 6: Final answer
    x = 3,102.58

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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.