Home / 2,178.18-3,269.12-946.58

Finding the Fourth Proportional to 2,178.18, 3,269.12 and 946.58

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Solution

The fourth proportional to 2,178.18, 3,269.12 and 946.58 is: 1,420.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.18 : 3,269.12 = 946.58 : x
  2. Step 2: Convert to fraction form
    2,178.18/3,269.12 = 946.58/x
  3. Step 3: Cross multiply
    2,178.18x = 3,269.12 × 946.58
  4. Step 4: Simplify right side
    2,178.18x = 3,094,462.53
  5. Step 5: Solve for x
    x = 3,094,462.53/2,178.18
  6. Step 6: Final answer
    x = 1,420.66

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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.