Home / 3,123.65-4,310.73-1,707.47

Finding the Fourth Proportional to 3,123.65, 4,310.73 and 1,707.47

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Solution

The fourth proportional to 3,123.65, 4,310.73 and 1,707.47 is: 2,356.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.65 : 4,310.73 = 1,707.47 : x
  2. Step 2: Convert to fraction form
    3,123.65/4,310.73 = 1,707.47/x
  3. Step 3: Cross multiply
    3,123.65x = 4,310.73 × 1,707.47
  4. Step 4: Simplify right side
    3,123.65x = 7,360,442.15
  5. Step 5: Solve for x
    x = 7,360,442.15/3,123.65
  6. Step 6: Final answer
    x = 2,356.36

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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.