Home / 3,547.40-5,315.70-2,391.80

Finding the Fourth Proportional to 3,547.40, 5,315.70 and 2,391.80

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Solution

The fourth proportional to 3,547.40, 5,315.70 and 2,391.80 is: 3,584.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,547.40 : 5,315.70 = 2,391.80 : x
  2. Step 2: Convert to fraction form
    3,547.40/5,315.70 = 2,391.80/x
  3. Step 3: Cross multiply
    3,547.40x = 5,315.70 × 2,391.80
  4. Step 4: Simplify right side
    3,547.40x = 12,714,091.26
  5. Step 5: Solve for x
    x = 12,714,091.26/3,547.40
  6. Step 6: Final answer
    x = 3,584.06

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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.