Home / 9,886.09-13,643.15-5,637.79

Finding the Fourth Proportional to 9,886.09, 13,643.15 and 5,637.79

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Solution

The fourth proportional to 9,886.09, 13,643.15 and 5,637.79 is: 7,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,886.09 : 13,643.15 = 5,637.79 : x
  2. Step 2: Convert to fraction form
    9,886.09/13,643.15 = 5,637.79/x
  3. Step 3: Cross multiply
    9,886.09x = 13,643.15 × 5,637.79
  4. Step 4: Simplify right side
    9,886.09x = 76,917,214.64
  5. Step 5: Solve for x
    x = 76,917,214.64/9,886.09
  6. Step 6: Final answer
    x = 7,780.35

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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.