Home / 10,385.78-15,578.76-3,460.28

Finding the Fourth Proportional to 10,385.78, 15,578.76 and 3,460.28

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Solution

The fourth proportional to 10,385.78, 15,578.76 and 3,460.28 is: 5,190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.78 : 15,578.76 = 3,460.28 : x
  2. Step 2: Convert to fraction form
    10,385.78/15,578.76 = 3,460.28/x
  3. Step 3: Cross multiply
    10,385.78x = 15,578.76 × 3,460.28
  4. Step 4: Simplify right side
    10,385.78x = 53,906,871.65
  5. Step 5: Solve for x
    x = 53,906,871.65/10,385.78
  6. Step 6: Final answer
    x = 5,190.45

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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.