Home / 8,430.35-11,631.86-5,445.68

Finding the Fourth Proportional to 8,430.35, 11,631.86 and 5,445.68

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Solution

The fourth proportional to 8,430.35, 11,631.86 and 5,445.68 is: 7,513.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.35 : 11,631.86 = 5,445.68 : x
  2. Step 2: Convert to fraction form
    8,430.35/11,631.86 = 5,445.68/x
  3. Step 3: Cross multiply
    8,430.35x = 11,631.86 × 5,445.68
  4. Step 4: Simplify right side
    8,430.35x = 63,343,301.98
  5. Step 5: Solve for x
    x = 63,343,301.98/8,430.35
  6. Step 6: Final answer
    x = 7,513.73

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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.