Home / 2,860.47-4,287.65-1,872.09

Finding the Fourth Proportional to 2,860.47, 4,287.65 and 1,872.09

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Solution

The fourth proportional to 2,860.47, 4,287.65 and 1,872.09 is: 2,806.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.47 : 4,287.65 = 1,872.09 : x
  2. Step 2: Convert to fraction form
    2,860.47/4,287.65 = 1,872.09/x
  3. Step 3: Cross multiply
    2,860.47x = 4,287.65 × 1,872.09
  4. Step 4: Simplify right side
    2,860.47x = 8,026,857.33
  5. Step 5: Solve for x
    x = 8,026,857.33/2,860.47
  6. Step 6: Final answer
    x = 2,806.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.