Home / 7,421.30-10,240.40-4,235.04

Finding the Fourth Proportional to 7,421.30, 10,240.40 and 4,235.04

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Solution

The fourth proportional to 7,421.30, 10,240.40 and 4,235.04 is: 5,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.30 : 10,240.40 = 4,235.04 : x
  2. Step 2: Convert to fraction form
    7,421.30/10,240.40 = 4,235.04/x
  3. Step 3: Cross multiply
    7,421.30x = 10,240.40 × 4,235.04
  4. Step 4: Simplify right side
    7,421.30x = 43,368,503.62
  5. Step 5: Solve for x
    x = 43,368,503.62/7,421.30
  6. Step 6: Final answer
    x = 5,843.79

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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.