Home / 2,225.40-3,072.49-1,429.08

Finding the Fourth Proportional to 2,225.40, 3,072.49 and 1,429.08

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Solution

The fourth proportional to 2,225.40, 3,072.49 and 1,429.08 is: 1,973.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.40 : 3,072.49 = 1,429.08 : x
  2. Step 2: Convert to fraction form
    2,225.40/3,072.49 = 1,429.08/x
  3. Step 3: Cross multiply
    2,225.40x = 3,072.49 × 1,429.08
  4. Step 4: Simplify right side
    2,225.40x = 4,390,834.01
  5. Step 5: Solve for x
    x = 4,390,834.01/2,225.40
  6. Step 6: Final answer
    x = 1,973.05

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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.