Home / 3,856.65-5,320.53-2,439.65

Finding the Fourth Proportional to 3,856.65, 5,320.53 and 2,439.65

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Solution

The fourth proportional to 3,856.65, 5,320.53 and 2,439.65 is: 3,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.65 : 5,320.53 = 2,439.65 : x
  2. Step 2: Convert to fraction form
    3,856.65/5,320.53 = 2,439.65/x
  3. Step 3: Cross multiply
    3,856.65x = 5,320.53 × 2,439.65
  4. Step 4: Simplify right side
    3,856.65x = 12,980,204.41
  5. Step 5: Solve for x
    x = 12,980,204.41/3,856.65
  6. Step 6: Final answer
    x = 3,365.67

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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.