Home / 7,855.18-10,843.85-4,985.35

Finding the Fourth Proportional to 7,855.18, 10,843.85 and 4,985.35

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Solution

The fourth proportional to 7,855.18, 10,843.85 and 4,985.35 is: 6,882.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.18 : 10,843.85 = 4,985.35 : x
  2. Step 2: Convert to fraction form
    7,855.18/10,843.85 = 4,985.35/x
  3. Step 3: Cross multiply
    7,855.18x = 10,843.85 × 4,985.35
  4. Step 4: Simplify right side
    7,855.18x = 54,060,372.95
  5. Step 5: Solve for x
    x = 54,060,372.95/7,855.18
  6. Step 6: Final answer
    x = 6,882.13

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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.