Home / 4,977.89-6,869.11-2,853.40

Finding the Fourth Proportional to 4,977.89, 6,869.11 and 2,853.40

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Solution

The fourth proportional to 4,977.89, 6,869.11 and 2,853.40 is: 3,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,977.89 : 6,869.11 = 2,853.40 : x
  2. Step 2: Convert to fraction form
    4,977.89/6,869.11 = 2,853.40/x
  3. Step 3: Cross multiply
    4,977.89x = 6,869.11 × 2,853.40
  4. Step 4: Simplify right side
    4,977.89x = 19,600,269.86
  5. Step 5: Solve for x
    x = 19,600,269.86/4,977.89
  6. Step 6: Final answer
    x = 3,937.47

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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.