Home / 9,894.16-13,655.44-5,645.20

Finding the Fourth Proportional to 9,894.16, 13,655.44 and 5,645.20

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Solution

The fourth proportional to 9,894.16, 13,655.44 and 5,645.20 is: 7,791.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,894.16 : 13,655.44 = 5,645.20 : x
  2. Step 2: Convert to fraction form
    9,894.16/13,655.44 = 5,645.20/x
  3. Step 3: Cross multiply
    9,894.16x = 13,655.44 × 5,645.20
  4. Step 4: Simplify right side
    9,894.16x = 77,087,689.89
  5. Step 5: Solve for x
    x = 77,087,689.89/9,894.16
  6. Step 6: Final answer
    x = 7,791.23

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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.