Home / 7,715.49-10,653.39-5,920.11

Finding the Fourth Proportional to 7,715.49, 10,653.39 and 5,920.11

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Solution

The fourth proportional to 7,715.49, 10,653.39 and 5,920.11 is: 8,174.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.49 : 10,653.39 = 5,920.11 : x
  2. Step 2: Convert to fraction form
    7,715.49/10,653.39 = 5,920.11/x
  3. Step 3: Cross multiply
    7,715.49x = 10,653.39 × 5,920.11
  4. Step 4: Simplify right side
    7,715.49x = 63,069,240.67
  5. Step 5: Solve for x
    x = 63,069,240.67/7,715.49
  6. Step 6: Final answer
    x = 8,174.37

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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.