Home / 3,123.89-4,310.93-1,707.55

Finding the Fourth Proportional to 3,123.89, 4,310.93 and 1,707.55

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Solution

The fourth proportional to 3,123.89, 4,310.93 and 1,707.55 is: 2,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.89 : 4,310.93 = 1,707.55 : x
  2. Step 2: Convert to fraction form
    3,123.89/4,310.93 = 1,707.55/x
  3. Step 3: Cross multiply
    3,123.89x = 4,310.93 × 1,707.55
  4. Step 4: Simplify right side
    3,123.89x = 7,361,138.18
  5. Step 5: Solve for x
    x = 7,361,138.18/3,123.89
  6. Step 6: Final answer
    x = 2,356.40

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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.