Home / 4,781.12-7,170.72-1,317.60

Finding the Fourth Proportional to 4,781.12, 7,170.72 and 1,317.60

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Solution

The fourth proportional to 4,781.12, 7,170.72 and 1,317.60 is: 1,976.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.12 : 7,170.72 = 1,317.60 : x
  2. Step 2: Convert to fraction form
    4,781.12/7,170.72 = 1,317.60/x
  3. Step 3: Cross multiply
    4,781.12x = 7,170.72 × 1,317.60
  4. Step 4: Simplify right side
    4,781.12x = 9,448,140.67
  5. Step 5: Solve for x
    x = 9,448,140.67/4,781.12
  6. Step 6: Final answer
    x = 1,976.14

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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.