Home / 8,637.77-11,909.23-5,648.87

Finding the Fourth Proportional to 8,637.77, 11,909.23 and 5,648.87

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Solution

The fourth proportional to 8,637.77, 11,909.23 and 5,648.87 is: 7,788.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.77 : 11,909.23 = 5,648.87 : x
  2. Step 2: Convert to fraction form
    8,637.77/11,909.23 = 5,648.87/x
  3. Step 3: Cross multiply
    8,637.77x = 11,909.23 × 5,648.87
  4. Step 4: Simplify right side
    8,637.77x = 67,273,707.72
  5. Step 5: Solve for x
    x = 67,273,707.72/8,637.77
  6. Step 6: Final answer
    x = 7,788.32

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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.