Home / 3,870.58-5,341.48-2,191.99

Finding the Fourth Proportional to 3,870.58, 5,341.48 and 2,191.99

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Solution

The fourth proportional to 3,870.58, 5,341.48 and 2,191.99 is: 3,024.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.58 : 5,341.48 = 2,191.99 : x
  2. Step 2: Convert to fraction form
    3,870.58/5,341.48 = 2,191.99/x
  3. Step 3: Cross multiply
    3,870.58x = 5,341.48 × 2,191.99
  4. Step 4: Simplify right side
    3,870.58x = 11,708,438.56
  5. Step 5: Solve for x
    x = 11,708,438.56/3,870.58
  6. Step 6: Final answer
    x = 3,024.98

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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.