Home / 3,730.20-5,595.12-1,390.20

Finding the Fourth Proportional to 3,730.20, 5,595.12 and 1,390.20

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Solution

The fourth proportional to 3,730.20, 5,595.12 and 1,390.20 is: 2,085.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.20 : 5,595.12 = 1,390.20 : x
  2. Step 2: Convert to fraction form
    3,730.20/5,595.12 = 1,390.20/x
  3. Step 3: Cross multiply
    3,730.20x = 5,595.12 × 1,390.20
  4. Step 4: Simplify right side
    3,730.20x = 7,778,335.82
  5. Step 5: Solve for x
    x = 7,778,335.82/3,730.20
  6. Step 6: Final answer
    x = 2,085.23

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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.