Home / 7,915.11-10,922.12-4,378.25

Finding the Fourth Proportional to 7,915.11, 10,922.12 and 4,378.25

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Solution

The fourth proportional to 7,915.11, 10,922.12 and 4,378.25 is: 6,041.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.11 : 10,922.12 = 4,378.25 : x
  2. Step 2: Convert to fraction form
    7,915.11/10,922.12 = 4,378.25/x
  3. Step 3: Cross multiply
    7,915.11x = 10,922.12 × 4,378.25
  4. Step 4: Simplify right side
    7,915.11x = 47,819,695.39
  5. Step 5: Solve for x
    x = 47,819,695.39/7,915.11
  6. Step 6: Final answer
    x = 6,041.57

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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.