Home / 7,979.84-11,011.20-4,442.72

Finding the Fourth Proportional to 7,979.84, 11,011.20 and 4,442.72

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Solution

The fourth proportional to 7,979.84, 11,011.20 and 4,442.72 is: 6,130.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.84 : 11,011.20 = 4,442.72 : x
  2. Step 2: Convert to fraction form
    7,979.84/11,011.20 = 4,442.72/x
  3. Step 3: Cross multiply
    7,979.84x = 11,011.20 × 4,442.72
  4. Step 4: Simplify right side
    7,979.84x = 48,919,678.46
  5. Step 5: Solve for x
    x = 48,919,678.46/7,979.84
  6. Step 6: Final answer
    x = 6,130.41

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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.