Home / 3,615.32-4,985.56-2,199.20

Finding the Fourth Proportional to 3,615.32, 4,985.56 and 2,199.20

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Solution

The fourth proportional to 3,615.32, 4,985.56 and 2,199.20 is: 3,032.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.32 : 4,985.56 = 2,199.20 : x
  2. Step 2: Convert to fraction form
    3,615.32/4,985.56 = 2,199.20/x
  3. Step 3: Cross multiply
    3,615.32x = 4,985.56 × 2,199.20
  4. Step 4: Simplify right side
    3,615.32x = 10,964,243.55
  5. Step 5: Solve for x
    x = 10,964,243.55/3,615.32
  6. Step 6: Final answer
    x = 3,032.72

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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.