Home / 8,616.25-11,890.47-5,637.07

Finding the Fourth Proportional to 8,616.25, 11,890.47 and 5,637.07

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Solution

The fourth proportional to 8,616.25, 11,890.47 and 5,637.07 is: 7,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.25 : 11,890.47 = 5,637.07 : x
  2. Step 2: Convert to fraction form
    8,616.25/11,890.47 = 5,637.07/x
  3. Step 3: Cross multiply
    8,616.25x = 11,890.47 × 5,637.07
  4. Step 4: Simplify right side
    8,616.25x = 67,027,411.72
  5. Step 5: Solve for x
    x = 67,027,411.72/8,616.25
  6. Step 6: Final answer
    x = 7,779.19

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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.