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Finding the Fourth Proportional to 2,322.55, 3,483.47 and 678.65

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Solution

The fourth proportional to 2,322.55, 3,483.47 and 678.65 is: 1,017.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,322.55 : 3,483.47 = 678.65 : x
  2. Step 2: Convert to fraction form
    2,322.55/3,483.47 = 678.65/x
  3. Step 3: Cross multiply
    2,322.55x = 3,483.47 × 678.65
  4. Step 4: Simplify right side
    2,322.55x = 2,364,056.92
  5. Step 5: Solve for x
    x = 2,364,056.92/2,322.55
  6. Step 6: Final answer
    x = 1,017.87

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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.