Home / 5,123.63-7,069.35-3,418.78

Finding the Fourth Proportional to 5,123.63, 7,069.35 and 3,418.78

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Solution

The fourth proportional to 5,123.63, 7,069.35 and 3,418.78 is: 4,717.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.63 : 7,069.35 = 3,418.78 : x
  2. Step 2: Convert to fraction form
    5,123.63/7,069.35 = 3,418.78/x
  3. Step 3: Cross multiply
    5,123.63x = 7,069.35 × 3,418.78
  4. Step 4: Simplify right side
    5,123.63x = 24,168,543.56
  5. Step 5: Solve for x
    x = 24,168,543.56/5,123.63
  6. Step 6: Final answer
    x = 4,717.08

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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.