Home / 8,470.32-11,698.85-5,632.78

Finding the Fourth Proportional to 8,470.32, 11,698.85 and 5,632.78

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Solution

The fourth proportional to 8,470.32, 11,698.85 and 5,632.78 is: 7,779.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.32 : 11,698.85 = 5,632.78 : x
  2. Step 2: Convert to fraction form
    8,470.32/11,698.85 = 5,632.78/x
  3. Step 3: Cross multiply
    8,470.32x = 11,698.85 × 5,632.78
  4. Step 4: Simplify right side
    8,470.32x = 65,897,055.07
  5. Step 5: Solve for x
    x = 65,897,055.07/8,470.32
  6. Step 6: Final answer
    x = 7,779.76

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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.