Home / 6,900.15-9,521.42-3,915.39

Finding the Fourth Proportional to 6,900.15, 9,521.42 and 3,915.39

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Solution

The fourth proportional to 6,900.15, 9,521.42 and 3,915.39 is: 5,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.15 : 9,521.42 = 3,915.39 : x
  2. Step 2: Convert to fraction form
    6,900.15/9,521.42 = 3,915.39/x
  3. Step 3: Cross multiply
    6,900.15x = 9,521.42 × 3,915.39
  4. Step 4: Simplify right side
    6,900.15x = 37,280,053.08
  5. Step 5: Solve for x
    x = 37,280,053.08/6,900.15
  6. Step 6: Final answer
    x = 5,402.79

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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.