Home / 3,570.40-5,354.64-2,989.12

Finding the Fourth Proportional to 3,570.40, 5,354.64 and 2,989.12

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Solution

The fourth proportional to 3,570.40, 5,354.64 and 2,989.12 is: 4,482.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.40 : 5,354.64 = 2,989.12 : x
  2. Step 2: Convert to fraction form
    3,570.40/5,354.64 = 2,989.12/x
  3. Step 3: Cross multiply
    3,570.40x = 5,354.64 × 2,989.12
  4. Step 4: Simplify right side
    3,570.40x = 16,005,661.52
  5. Step 5: Solve for x
    x = 16,005,661.52/3,570.40
  6. Step 6: Final answer
    x = 4,482.88

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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.