Home / 3,145.57-4,341.67-1,820.07

Finding the Fourth Proportional to 3,145.57, 4,341.67 and 1,820.07

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Solution

The fourth proportional to 3,145.57, 4,341.67 and 1,820.07 is: 2,512.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.57 : 4,341.67 = 1,820.07 : x
  2. Step 2: Convert to fraction form
    3,145.57/4,341.67 = 1,820.07/x
  3. Step 3: Cross multiply
    3,145.57x = 4,341.67 × 1,820.07
  4. Step 4: Simplify right side
    3,145.57x = 7,902,138.77
  5. Step 5: Solve for x
    x = 7,902,138.77/3,145.57
  6. Step 6: Final answer
    x = 2,512.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.