Home / 7,123.85-10,685.36-1,929.32

Finding the Fourth Proportional to 7,123.85, 10,685.36 and 1,929.32

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Solution

The fourth proportional to 7,123.85, 10,685.36 and 1,929.32 is: 2,893.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.85 : 10,685.36 = 1,929.32 : x
  2. Step 2: Convert to fraction form
    7,123.85/10,685.36 = 1,929.32/x
  3. Step 3: Cross multiply
    7,123.85x = 10,685.36 × 1,929.32
  4. Step 4: Simplify right side
    7,123.85x = 20,615,425.33
  5. Step 5: Solve for x
    x = 20,615,425.33/7,123.85
  6. Step 6: Final answer
    x = 2,893.86

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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.