Home / 3,554.80-5,332.20-1,089.40

Finding the Fourth Proportional to 3,554.80, 5,332.20 and 1,089.40

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Solution

The fourth proportional to 3,554.80, 5,332.20 and 1,089.40 is: 1,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.80 : 5,332.20 = 1,089.40 : x
  2. Step 2: Convert to fraction form
    3,554.80/5,332.20 = 1,089.40/x
  3. Step 3: Cross multiply
    3,554.80x = 5,332.20 × 1,089.40
  4. Step 4: Simplify right side
    3,554.80x = 5,808,898.68
  5. Step 5: Solve for x
    x = 5,808,898.68/3,554.80
  6. Step 6: Final answer
    x = 1,634.10

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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.