Home / 5,275.50-7,915.53-2,809.62

Finding the Fourth Proportional to 5,275.50, 7,915.53 and 2,809.62

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Solution

The fourth proportional to 5,275.50, 7,915.53 and 2,809.62 is: 4,215.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.50 : 7,915.53 = 2,809.62 : x
  2. Step 2: Convert to fraction form
    5,275.50/7,915.53 = 2,809.62/x
  3. Step 3: Cross multiply
    5,275.50x = 7,915.53 × 2,809.62
  4. Step 4: Simplify right side
    5,275.50x = 22,239,631.40
  5. Step 5: Solve for x
    x = 22,239,631.40/5,275.50
  6. Step 6: Final answer
    x = 4,215.64

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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.