Home / 3,870.10-5,340.75-2,276.67

Finding the Fourth Proportional to 3,870.10, 5,340.75 and 2,276.67

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Solution

The fourth proportional to 3,870.10, 5,340.75 and 2,276.67 is: 3,141.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.10 : 5,340.75 = 2,276.67 : x
  2. Step 2: Convert to fraction form
    3,870.10/5,340.75 = 2,276.67/x
  3. Step 3: Cross multiply
    3,870.10x = 5,340.75 × 2,276.67
  4. Step 4: Simplify right side
    3,870.10x = 12,159,125.30
  5. Step 5: Solve for x
    x = 12,159,125.30/3,870.10
  6. Step 6: Final answer
    x = 3,141.81

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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.