Home / 7,771.66-10,721.68-5,415.17

Finding the Fourth Proportional to 7,771.66, 10,721.68 and 5,415.17

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Solution

The fourth proportional to 7,771.66, 10,721.68 and 5,415.17 is: 7,470.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.66 : 10,721.68 = 5,415.17 : x
  2. Step 2: Convert to fraction form
    7,771.66/10,721.68 = 5,415.17/x
  3. Step 3: Cross multiply
    7,771.66x = 10,721.68 × 5,415.17
  4. Step 4: Simplify right side
    7,771.66x = 58,059,652.74
  5. Step 5: Solve for x
    x = 58,059,652.74/7,771.66
  6. Step 6: Final answer
    x = 7,470.69

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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.