Home / 7,972.08-11,000.40-4,435.20

Finding the Fourth Proportional to 7,972.08, 11,000.40 and 4,435.20

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Solution

The fourth proportional to 7,972.08, 11,000.40 and 4,435.20 is: 6,119.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.08 : 11,000.40 = 4,435.20 : x
  2. Step 2: Convert to fraction form
    7,972.08/11,000.40 = 4,435.20/x
  3. Step 3: Cross multiply
    7,972.08x = 11,000.40 × 4,435.20
  4. Step 4: Simplify right side
    7,972.08x = 48,788,974.08
  5. Step 5: Solve for x
    x = 48,788,974.08/7,972.08
  6. Step 6: Final answer
    x = 6,119.98

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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.