Home / 7,123.86-9,830.97-4,141.58

Finding the Fourth Proportional to 7,123.86, 9,830.97 and 4,141.58

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Solution

The fourth proportional to 7,123.86, 9,830.97 and 4,141.58 is: 5,715.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.86 : 9,830.97 = 4,141.58 : x
  2. Step 2: Convert to fraction form
    7,123.86/9,830.97 = 4,141.58/x
  3. Step 3: Cross multiply
    7,123.86x = 9,830.97 × 4,141.58
  4. Step 4: Simplify right side
    7,123.86x = 40,715,699.58
  5. Step 5: Solve for x
    x = 40,715,699.58/7,123.86
  6. Step 6: Final answer
    x = 5,715.40

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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.