Home / 2,816.86-4,225.35-869.06

Finding the Fourth Proportional to 2,816.86, 4,225.35 and 869.06

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Solution

The fourth proportional to 2,816.86, 4,225.35 and 869.06 is: 1,303.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.86 : 4,225.35 = 869.06 : x
  2. Step 2: Convert to fraction form
    2,816.86/4,225.35 = 869.06/x
  3. Step 3: Cross multiply
    2,816.86x = 4,225.35 × 869.06
  4. Step 4: Simplify right side
    2,816.86x = 3,672,082.67
  5. Step 5: Solve for x
    x = 3,672,082.67/2,816.86
  6. Step 6: Final answer
    x = 1,303.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.