Home / 5,123.29-7,678.23-4,994.50

Finding the Fourth Proportional to 5,123.29, 7,678.23 and 4,994.50

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Solution

The fourth proportional to 5,123.29, 7,678.23 and 4,994.50 is: 7,485.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.29 : 7,678.23 = 4,994.50 : x
  2. Step 2: Convert to fraction form
    5,123.29/7,678.23 = 4,994.50/x
  3. Step 3: Cross multiply
    5,123.29x = 7,678.23 × 4,994.50
  4. Step 4: Simplify right side
    5,123.29x = 38,348,919.74
  5. Step 5: Solve for x
    x = 38,348,919.74/5,123.29
  6. Step 6: Final answer
    x = 7,485.21

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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.