Home / 3,000.29-4,139.78-1,820.70

Finding the Fourth Proportional to 3,000.29, 4,139.78 and 1,820.70

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Solution

The fourth proportional to 3,000.29, 4,139.78 and 1,820.70 is: 2,512.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.29 : 4,139.78 = 1,820.70 : x
  2. Step 2: Convert to fraction form
    3,000.29/4,139.78 = 1,820.70/x
  3. Step 3: Cross multiply
    3,000.29x = 4,139.78 × 1,820.70
  4. Step 4: Simplify right side
    3,000.29x = 7,537,288.34
  5. Step 5: Solve for x
    x = 7,537,288.34/3,000.29
  6. Step 6: Final answer
    x = 2,512.19

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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.