Home / 8,289.36-12,430.56-3,669.12

Finding the Fourth Proportional to 8,289.36, 12,430.56 and 3,669.12

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Solution

The fourth proportional to 8,289.36, 12,430.56 and 3,669.12 is: 5,502.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.36 : 12,430.56 = 3,669.12 : x
  2. Step 2: Convert to fraction form
    8,289.36/12,430.56 = 3,669.12/x
  3. Step 3: Cross multiply
    8,289.36x = 12,430.56 × 3,669.12
  4. Step 4: Simplify right side
    8,289.36x = 45,609,216.31
  5. Step 5: Solve for x
    x = 45,609,216.31/8,289.36
  6. Step 6: Final answer
    x = 5,502.14

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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.