Home / 7,123.61-10,685.41-1,929.49

Finding the Fourth Proportional to 7,123.61, 10,685.41 and 1,929.49

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Solution

The fourth proportional to 7,123.61, 10,685.41 and 1,929.49 is: 2,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.61 : 10,685.41 = 1,929.49 : x
  2. Step 2: Convert to fraction form
    7,123.61/10,685.41 = 1,929.49/x
  3. Step 3: Cross multiply
    7,123.61x = 10,685.41 × 1,929.49
  4. Step 4: Simplify right side
    7,123.61x = 20,617,360.20
  5. Step 5: Solve for x
    x = 20,617,360.20/7,123.61
  6. Step 6: Final answer
    x = 2,894.23

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Similar ratio
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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.