Home / 7,818.15-11,728.98-2,887.95

Finding the Fourth Proportional to 7,818.15, 11,728.98 and 2,887.95

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Solution

The fourth proportional to 7,818.15, 11,728.98 and 2,887.95 is: 4,332.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.15 : 11,728.98 = 2,887.95 : x
  2. Step 2: Convert to fraction form
    7,818.15/11,728.98 = 2,887.95/x
  3. Step 3: Cross multiply
    7,818.15x = 11,728.98 × 2,887.95
  4. Step 4: Simplify right side
    7,818.15x = 33,872,707.79
  5. Step 5: Solve for x
    x = 33,872,707.79/7,818.15
  6. Step 6: Final answer
    x = 4,332.57

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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.