Home / 6,915.99-9,543.75-4,231.68

Finding the Fourth Proportional to 6,915.99, 9,543.75 and 4,231.68

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Solution

The fourth proportional to 6,915.99, 9,543.75 and 4,231.68 is: 5,839.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.99 : 9,543.75 = 4,231.68 : x
  2. Step 2: Convert to fraction form
    6,915.99/9,543.75 = 4,231.68/x
  3. Step 3: Cross multiply
    6,915.99x = 9,543.75 × 4,231.68
  4. Step 4: Simplify right side
    6,915.99x = 40,386,044.34
  5. Step 5: Solve for x
    x = 40,386,044.34/6,915.99
  6. Step 6: Final answer
    x = 5,839.51

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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.