Home / 8,430.32-11,632.20-7,176.08

Finding the Fourth Proportional to 8,430.32, 11,632.20 and 7,176.08

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Solution

The fourth proportional to 8,430.32, 11,632.20 and 7,176.08 is: 9,901.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.32 : 11,632.20 = 7,176.08 : x
  2. Step 2: Convert to fraction form
    8,430.32/11,632.20 = 7,176.08/x
  3. Step 3: Cross multiply
    8,430.32x = 11,632.20 × 7,176.08
  4. Step 4: Simplify right side
    8,430.32x = 83,473,597.78
  5. Step 5: Solve for x
    x = 83,473,597.78/8,430.32
  6. Step 6: Final answer
    x = 9,901.59

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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.