Home / 7,475.40-10,315.72-4,286.48

Finding the Fourth Proportional to 7,475.40, 10,315.72 and 4,286.48

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Solution

The fourth proportional to 7,475.40, 10,315.72 and 4,286.48 is: 5,915.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.40 : 10,315.72 = 4,286.48 : x
  2. Step 2: Convert to fraction form
    7,475.40/10,315.72 = 4,286.48/x
  3. Step 3: Cross multiply
    7,475.40x = 10,315.72 × 4,286.48
  4. Step 4: Simplify right side
    7,475.40x = 44,218,100.30
  5. Step 5: Solve for x
    x = 44,218,100.30/7,475.40
  6. Step 6: Final answer
    x = 5,915.15

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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.