Home / 3,117.10-4,676.52-925.78

Finding the Fourth Proportional to 3,117.10, 4,676.52 and 925.78

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Solution

The fourth proportional to 3,117.10, 4,676.52 and 925.78 is: 1,388.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.10 : 4,676.52 = 925.78 : x
  2. Step 2: Convert to fraction form
    3,117.10/4,676.52 = 925.78/x
  3. Step 3: Cross multiply
    3,117.10x = 4,676.52 × 925.78
  4. Step 4: Simplify right side
    3,117.10x = 4,329,428.69
  5. Step 5: Solve for x
    x = 4,329,428.69/3,117.10
  6. Step 6: Final answer
    x = 1,388.93

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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.