Home / 4,985.29-6,879.10-2,860.71

Finding the Fourth Proportional to 4,985.29, 6,879.10 and 2,860.71

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Solution

The fourth proportional to 4,985.29, 6,879.10 and 2,860.71 is: 3,947.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.29 : 6,879.10 = 2,860.71 : x
  2. Step 2: Convert to fraction form
    4,985.29/6,879.10 = 2,860.71/x
  3. Step 3: Cross multiply
    4,985.29x = 6,879.10 × 2,860.71
  4. Step 4: Simplify right side
    4,985.29x = 19,679,110.16
  5. Step 5: Solve for x
    x = 19,679,110.16/4,985.29
  6. Step 6: Final answer
    x = 3,947.44

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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.