Home / 1,891.08-2,607.12-1,412.10

Finding the Fourth Proportional to 1,891.08, 2,607.12 and 1,412.10

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Solution

The fourth proportional to 1,891.08, 2,607.12 and 1,412.10 is: 1,946.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.08 : 2,607.12 = 1,412.10 : x
  2. Step 2: Convert to fraction form
    1,891.08/2,607.12 = 1,412.10/x
  3. Step 3: Cross multiply
    1,891.08x = 2,607.12 × 1,412.10
  4. Step 4: Simplify right side
    1,891.08x = 3,681,514.15
  5. Step 5: Solve for x
    x = 3,681,514.15/1,891.08
  6. Step 6: Final answer
    x = 1,946.78

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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.