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Finding the Fourth Proportional to 7,915.06, 10,922.03 and 4,378.19

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Solution

The fourth proportional to 7,915.06, 10,922.03 and 4,378.19 is: 6,041.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.06 : 10,922.03 = 4,378.19 : x
  2. Step 2: Convert to fraction form
    7,915.06/10,922.03 = 4,378.19/x
  3. Step 3: Cross multiply
    7,915.06x = 10,922.03 × 4,378.19
  4. Step 4: Simplify right side
    7,915.06x = 47,818,700.63
  5. Step 5: Solve for x
    x = 47,818,700.63/7,915.06
  6. Step 6: Final answer
    x = 6,041.49

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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.