Home / 6,380.19-8,802.48-3,988.53

Finding the Fourth Proportional to 6,380.19, 8,802.48 and 3,988.53

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Solution

The fourth proportional to 6,380.19, 8,802.48 and 3,988.53 is: 5,502.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,380.19 : 8,802.48 = 3,988.53 : x
  2. Step 2: Convert to fraction form
    6,380.19/8,802.48 = 3,988.53/x
  3. Step 3: Cross multiply
    6,380.19x = 8,802.48 × 3,988.53
  4. Step 4: Simplify right side
    6,380.19x = 35,108,955.55
  5. Step 5: Solve for x
    x = 35,108,955.55/6,380.19
  6. Step 6: Final answer
    x = 5,502.81

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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.