Home / 3,111.20-4,292.28-1,852.30

Finding the Fourth Proportional to 3,111.20, 4,292.28 and 1,852.30

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Solution

The fourth proportional to 3,111.20, 4,292.28 and 1,852.30 is: 2,555.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.20 : 4,292.28 = 1,852.30 : x
  2. Step 2: Convert to fraction form
    3,111.20/4,292.28 = 1,852.30/x
  3. Step 3: Cross multiply
    3,111.20x = 4,292.28 × 1,852.30
  4. Step 4: Simplify right side
    3,111.20x = 7,950,590.24
  5. Step 5: Solve for x
    x = 7,950,590.24/3,111.20
  6. Step 6: Final answer
    x = 2,555.47

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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.