Home / 2,987.65-4,118.16-2,357.11

Finding the Fourth Proportional to 2,987.65, 4,118.16 and 2,357.11

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Solution

The fourth proportional to 2,987.65, 4,118.16 and 2,357.11 is: 3,249.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.65 : 4,118.16 = 2,357.11 : x
  2. Step 2: Convert to fraction form
    2,987.65/4,118.16 = 2,357.11/x
  3. Step 3: Cross multiply
    2,987.65x = 4,118.16 × 2,357.11
  4. Step 4: Simplify right side
    2,987.65x = 9,706,956.12
  5. Step 5: Solve for x
    x = 9,706,956.12/2,987.65
  6. Step 6: Final answer
    x = 3,249.03

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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.