Home / 5,175.60-7,763.40-4,920.45

Finding the Fourth Proportional to 5,175.60, 7,763.40 and 4,920.45

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Solution

The fourth proportional to 5,175.60, 7,763.40 and 4,920.45 is: 7,380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.60 : 7,763.40 = 4,920.45 : x
  2. Step 2: Convert to fraction form
    5,175.60/7,763.40 = 4,920.45/x
  3. Step 3: Cross multiply
    5,175.60x = 7,763.40 × 4,920.45
  4. Step 4: Simplify right side
    5,175.60x = 38,199,421.53
  5. Step 5: Solve for x
    x = 38,199,421.53/5,175.60
  6. Step 6: Final answer
    x = 7,380.68

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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.