Home / 8,470.32-11,690.99-5,637.81

Finding the Fourth Proportional to 8,470.32, 11,690.99 and 5,637.81

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Solution

The fourth proportional to 8,470.32, 11,690.99 and 5,637.81 is: 7,781.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.32 : 11,690.99 = 5,637.81 : x
  2. Step 2: Convert to fraction form
    8,470.32/11,690.99 = 5,637.81/x
  3. Step 3: Cross multiply
    8,470.32x = 11,690.99 × 5,637.81
  4. Step 4: Simplify right side
    8,470.32x = 65,911,521.88
  5. Step 5: Solve for x
    x = 65,911,521.88/8,470.32
  6. Step 6: Final answer
    x = 7,781.47

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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.