Home / 3,547.79-5,321.36-1,209.11

Finding the Fourth Proportional to 3,547.79, 5,321.36 and 1,209.11

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Solution

The fourth proportional to 3,547.79, 5,321.36 and 1,209.11 is: 1,813.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,547.79 : 5,321.36 = 1,209.11 : x
  2. Step 2: Convert to fraction form
    3,547.79/5,321.36 = 1,209.11/x
  3. Step 3: Cross multiply
    3,547.79x = 5,321.36 × 1,209.11
  4. Step 4: Simplify right side
    3,547.79x = 6,434,076.94
  5. Step 5: Solve for x
    x = 6,434,076.94/3,547.79
  6. Step 6: Final answer
    x = 1,813.55

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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.