Home / 8,618.07-11,891.09-5,031.40

Finding the Fourth Proportional to 8,618.07, 11,891.09 and 5,031.40

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Solution

The fourth proportional to 8,618.07, 11,891.09 and 5,031.40 is: 6,942.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.07 : 11,891.09 = 5,031.40 : x
  2. Step 2: Convert to fraction form
    8,618.07/11,891.09 = 5,031.40/x
  3. Step 3: Cross multiply
    8,618.07x = 11,891.09 × 5,031.40
  4. Step 4: Simplify right side
    8,618.07x = 59,828,830.23
  5. Step 5: Solve for x
    x = 59,828,830.23/8,618.07
  6. Step 6: Final answer
    x = 6,942.25

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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.