Home / 4,456.90-6,686.28-1,336.78

Finding the Fourth Proportional to 4,456.90, 6,686.28 and 1,336.78

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Solution

The fourth proportional to 4,456.90, 6,686.28 and 1,336.78 is: 2,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,456.90 : 6,686.28 = 1,336.78 : x
  2. Step 2: Convert to fraction form
    4,456.90/6,686.28 = 1,336.78/x
  3. Step 3: Cross multiply
    4,456.90x = 6,686.28 × 1,336.78
  4. Step 4: Simplify right side
    4,456.90x = 8,938,085.38
  5. Step 5: Solve for x
    x = 8,938,085.38/4,456.90
  6. Step 6: Final answer
    x = 2,005.45

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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.