Home / 3,541.80-5,312.70-1,813.80

Finding the Fourth Proportional to 3,541.80, 5,312.70 and 1,813.80

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Solution

The fourth proportional to 3,541.80, 5,312.70 and 1,813.80 is: 2,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,541.80 : 5,312.70 = 1,813.80 : x
  2. Step 2: Convert to fraction form
    3,541.80/5,312.70 = 1,813.80/x
  3. Step 3: Cross multiply
    3,541.80x = 5,312.70 × 1,813.80
  4. Step 4: Simplify right side
    3,541.80x = 9,636,175.26
  5. Step 5: Solve for x
    x = 9,636,175.26/3,541.80
  6. Step 6: Final answer
    x = 2,720.70

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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.