Home / 7,185.28-9,915.84-4,353.12

Finding the Fourth Proportional to 7,185.28, 9,915.84 and 4,353.12

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Solution

The fourth proportional to 7,185.28, 9,915.84 and 4,353.12 is: 6,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185.28 : 9,915.84 = 4,353.12 : x
  2. Step 2: Convert to fraction form
    7,185.28/9,915.84 = 4,353.12/x
  3. Step 3: Cross multiply
    7,185.28x = 9,915.84 × 4,353.12
  4. Step 4: Simplify right side
    7,185.28x = 43,164,841.42
  5. Step 5: Solve for x
    x = 43,164,841.42/7,185.28
  6. Step 6: Final answer
    x = 6,007.40

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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.