Home / 4,112.67-5,678.08-2,920.16

Finding the Fourth Proportional to 4,112.67, 5,678.08 and 2,920.16

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Solution

The fourth proportional to 4,112.67, 5,678.08 and 2,920.16 is: 4,031.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.67 : 5,678.08 = 2,920.16 : x
  2. Step 2: Convert to fraction form
    4,112.67/5,678.08 = 2,920.16/x
  3. Step 3: Cross multiply
    4,112.67x = 5,678.08 × 2,920.16
  4. Step 4: Simplify right side
    4,112.67x = 16,580,900.55
  5. Step 5: Solve for x
    x = 16,580,900.55/4,112.67
  6. Step 6: Final answer
    x = 4,031.66

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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.