Home / 8,430.16-11,639.04-5,450.56

Finding the Fourth Proportional to 8,430.16, 11,639.04 and 5,450.56

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Solution

The fourth proportional to 8,430.16, 11,639.04 and 5,450.56 is: 7,525.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.16 : 11,639.04 = 5,450.56 : x
  2. Step 2: Convert to fraction form
    8,430.16/11,639.04 = 5,450.56/x
  3. Step 3: Cross multiply
    8,430.16x = 11,639.04 × 5,450.56
  4. Step 4: Simplify right side
    8,430.16x = 63,439,285.86
  5. Step 5: Solve for x
    x = 63,439,285.86/8,430.16
  6. Step 6: Final answer
    x = 7,525.28

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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.