Home / 4,869.90-7,300.80-2,561.40

Finding the Fourth Proportional to 4,869.90, 7,300.80 and 2,561.40

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Solution

The fourth proportional to 4,869.90, 7,300.80 and 2,561.40 is: 3,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.90 : 7,300.80 = 2,561.40 : x
  2. Step 2: Convert to fraction form
    4,869.90/7,300.80 = 2,561.40/x
  3. Step 3: Cross multiply
    4,869.90x = 7,300.80 × 2,561.40
  4. Step 4: Simplify right side
    4,869.90x = 18,700,269.12
  5. Step 5: Solve for x
    x = 18,700,269.12/4,869.90
  6. Step 6: Final answer
    x = 3,839.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.