Home / 3,869.08-5,339.32-2,100.67

Finding the Fourth Proportional to 3,869.08, 5,339.32 and 2,100.67

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Solution

The fourth proportional to 3,869.08, 5,339.32 and 2,100.67 is: 2,898.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.08 : 5,339.32 = 2,100.67 : x
  2. Step 2: Convert to fraction form
    3,869.08/5,339.32 = 2,100.67/x
  3. Step 3: Cross multiply
    3,869.08x = 5,339.32 × 2,100.67
  4. Step 4: Simplify right side
    3,869.08x = 11,216,130.74
  5. Step 5: Solve for x
    x = 11,216,130.74/3,869.08
  6. Step 6: Final answer
    x = 2,898.92

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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.