Home / 3,179.04-4,766.40-1,615.20

Finding the Fourth Proportional to 3,179.04, 4,766.40 and 1,615.20

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Solution

The fourth proportional to 3,179.04, 4,766.40 and 1,615.20 is: 2,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.04 : 4,766.40 = 1,615.20 : x
  2. Step 2: Convert to fraction form
    3,179.04/4,766.40 = 1,615.20/x
  3. Step 3: Cross multiply
    3,179.04x = 4,766.40 × 1,615.20
  4. Step 4: Simplify right side
    3,179.04x = 7,698,689.28
  5. Step 5: Solve for x
    x = 7,698,689.28/3,179.04
  6. Step 6: Final answer
    x = 2,421.70

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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.