Home / 1,365.12-2,041.92-1,089.12

Finding the Fourth Proportional to 1,365.12, 2,041.92 and 1,089.12

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Solution

The fourth proportional to 1,365.12, 2,041.92 and 1,089.12 is: 1,629.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.12 : 2,041.92 = 1,089.12 : x
  2. Step 2: Convert to fraction form
    1,365.12/2,041.92 = 1,089.12/x
  3. Step 3: Cross multiply
    1,365.12x = 2,041.92 × 1,089.12
  4. Step 4: Simplify right side
    1,365.12x = 2,223,895.91
  5. Step 5: Solve for x
    x = 2,223,895.91/1,365.12
  6. Step 6: Final answer
    x = 1,629.08

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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.