Home / 3,211.04-4,816.19-870.91

Finding the Fourth Proportional to 3,211.04, 4,816.19 and 870.91

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Solution

The fourth proportional to 3,211.04, 4,816.19 and 870.91 is: 1,306.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.04 : 4,816.19 = 870.91 : x
  2. Step 2: Convert to fraction form
    3,211.04/4,816.19 = 870.91/x
  3. Step 3: Cross multiply
    3,211.04x = 4,816.19 × 870.91
  4. Step 4: Simplify right side
    3,211.04x = 4,194,468.03
  5. Step 5: Solve for x
    x = 4,194,468.03/3,211.04
  6. Step 6: Final answer
    x = 1,306.26

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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.