Home / 6,315.61-8,716.13-3,627.20

Finding the Fourth Proportional to 6,315.61, 8,716.13 and 3,627.20

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Solution

The fourth proportional to 6,315.61, 8,716.13 and 3,627.20 is: 5,005.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.61 : 8,716.13 = 3,627.20 : x
  2. Step 2: Convert to fraction form
    6,315.61/8,716.13 = 3,627.20/x
  3. Step 3: Cross multiply
    6,315.61x = 8,716.13 × 3,627.20
  4. Step 4: Simplify right side
    6,315.61x = 31,615,085.02
  5. Step 5: Solve for x
    x = 31,615,085.02/6,315.61
  6. Step 6: Final answer
    x = 5,005.87

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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.