Home / 7,108.78-9,809.32-4,124.20

Finding the Fourth Proportional to 7,108.78, 9,809.32 and 4,124.20

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Solution

The fourth proportional to 7,108.78, 9,809.32 and 4,124.20 is: 5,690.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.78 : 9,809.32 = 4,124.20 : x
  2. Step 2: Convert to fraction form
    7,108.78/9,809.32 = 4,124.20/x
  3. Step 3: Cross multiply
    7,108.78x = 9,809.32 × 4,124.20
  4. Step 4: Simplify right side
    7,108.78x = 40,455,597.54
  5. Step 5: Solve for x
    x = 40,455,597.54/7,108.78
  6. Step 6: Final answer
    x = 5,690.93

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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.