Home / 8,430.38-11,631.90-5,445.62

Finding the Fourth Proportional to 8,430.38, 11,631.90 and 5,445.62

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Solution

The fourth proportional to 8,430.38, 11,631.90 and 5,445.62 is: 7,513.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.38 : 11,631.90 = 5,445.62 : x
  2. Step 2: Convert to fraction form
    8,430.38/11,631.90 = 5,445.62/x
  3. Step 3: Cross multiply
    8,430.38x = 11,631.90 × 5,445.62
  4. Step 4: Simplify right side
    8,430.38x = 63,342,907.28
  5. Step 5: Solve for x
    x = 63,342,907.28/8,430.38
  6. Step 6: Final answer
    x = 7,513.65

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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.