Home / 9,711.49-13,401.78-5,519.74

Finding the Fourth Proportional to 9,711.49, 13,401.78 and 5,519.74

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Solution

The fourth proportional to 9,711.49, 13,401.78 and 5,519.74 is: 7,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,711.49 : 13,401.78 = 5,519.74 : x
  2. Step 2: Convert to fraction form
    9,711.49/13,401.78 = 5,519.74/x
  3. Step 3: Cross multiply
    9,711.49x = 13,401.78 × 5,519.74
  4. Step 4: Simplify right side
    9,711.49x = 73,974,341.14
  5. Step 5: Solve for x
    x = 73,974,341.14/9,711.49
  6. Step 6: Final answer
    x = 7,617.20

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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.