Home / 7,078.20-10,618.58-2,915.93

Finding the Fourth Proportional to 7,078.20, 10,618.58 and 2,915.93

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Solution

The fourth proportional to 7,078.20, 10,618.58 and 2,915.93 is: 4,374.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.20 : 10,618.58 = 2,915.93 : x
  2. Step 2: Convert to fraction form
    7,078.20/10,618.58 = 2,915.93/x
  3. Step 3: Cross multiply
    7,078.20x = 10,618.58 × 2,915.93
  4. Step 4: Simplify right side
    7,078.20x = 30,963,047.95
  5. Step 5: Solve for x
    x = 30,963,047.95/7,078.20
  6. Step 6: Final answer
    x = 4,374.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.