Home / 7,126.41-10,686.51-2,740.78

Finding the Fourth Proportional to 7,126.41, 10,686.51 and 2,740.78

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Solution

The fourth proportional to 7,126.41, 10,686.51 and 2,740.78 is: 4,109.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.41 : 10,686.51 = 2,740.78 : x
  2. Step 2: Convert to fraction form
    7,126.41/10,686.51 = 2,740.78/x
  3. Step 3: Cross multiply
    7,126.41x = 10,686.51 × 2,740.78
  4. Step 4: Simplify right side
    7,126.41x = 29,289,386.24
  5. Step 5: Solve for x
    x = 29,289,386.24/7,126.41
  6. Step 6: Final answer
    x = 4,109.98

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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.