Home / 7,854.50-11,776.85-2,920.08

Finding the Fourth Proportional to 7,854.50, 11,776.85 and 2,920.08

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Solution

The fourth proportional to 7,854.50, 11,776.85 and 2,920.08 is: 4,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.50 : 11,776.85 = 2,920.08 : x
  2. Step 2: Convert to fraction form
    7,854.50/11,776.85 = 2,920.08/x
  3. Step 3: Cross multiply
    7,854.50x = 11,776.85 × 2,920.08
  4. Step 4: Simplify right side
    7,854.50x = 34,389,329.55
  5. Step 5: Solve for x
    x = 34,389,329.55/7,854.50
  6. Step 6: Final answer
    x = 4,378.30

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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.