Home / 2,287.80-3,427.65-1,421.10

Finding the Fourth Proportional to 2,287.80, 3,427.65 and 1,421.10

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Solution

The fourth proportional to 2,287.80, 3,427.65 and 1,421.10 is: 2,129.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.80 : 3,427.65 = 1,421.10 : x
  2. Step 2: Convert to fraction form
    2,287.80/3,427.65 = 1,421.10/x
  3. Step 3: Cross multiply
    2,287.80x = 3,427.65 × 1,421.10
  4. Step 4: Simplify right side
    2,287.80x = 4,871,033.42
  5. Step 5: Solve for x
    x = 4,871,033.42/2,287.80
  6. Step 6: Final answer
    x = 2,129.13

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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.