Home / 3,870.24-5,342.40-2,299.20

Finding the Fourth Proportional to 3,870.24, 5,342.40 and 2,299.20

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Solution

The fourth proportional to 3,870.24, 5,342.40 and 2,299.20 is: 3,173.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.24 : 5,342.40 = 2,299.20 : x
  2. Step 2: Convert to fraction form
    3,870.24/5,342.40 = 2,299.20/x
  3. Step 3: Cross multiply
    3,870.24x = 5,342.40 × 2,299.20
  4. Step 4: Simplify right side
    3,870.24x = 12,283,246.08
  5. Step 5: Solve for x
    x = 12,283,246.08/3,870.24
  6. Step 6: Final answer
    x = 3,173.77

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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.