Home / 7,915.80-11,873.70-3,298.20

Finding the Fourth Proportional to 7,915.80, 11,873.70 and 3,298.20

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Solution

The fourth proportional to 7,915.80, 11,873.70 and 3,298.20 is: 4,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.80 : 11,873.70 = 3,298.20 : x
  2. Step 2: Convert to fraction form
    7,915.80/11,873.70 = 3,298.20/x
  3. Step 3: Cross multiply
    7,915.80x = 11,873.70 × 3,298.20
  4. Step 4: Simplify right side
    7,915.80x = 39,161,837.34
  5. Step 5: Solve for x
    x = 39,161,837.34/7,915.80
  6. Step 6: Final answer
    x = 4,947.30

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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.