Home / 7,123.50-10,678.14-3,424.68

Finding the Fourth Proportional to 7,123.50, 10,678.14 and 3,424.68

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Solution

The fourth proportional to 7,123.50, 10,678.14 and 3,424.68 is: 5,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.50 : 10,678.14 = 3,424.68 : x
  2. Step 2: Convert to fraction form
    7,123.50/10,678.14 = 3,424.68/x
  3. Step 3: Cross multiply
    7,123.50x = 10,678.14 × 3,424.68
  4. Step 4: Simplify right side
    7,123.50x = 36,569,212.50
  5. Step 5: Solve for x
    x = 36,569,212.50/7,123.50
  6. Step 6: Final answer
    x = 5,133.60

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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.