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Finding the Fourth Proportional to 2,315.64, 3,473.69 and 854.45

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Solution

The fourth proportional to 2,315.64, 3,473.69 and 854.45 is: 1,281.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.64 : 3,473.69 = 854.45 : x
  2. Step 2: Convert to fraction form
    2,315.64/3,473.69 = 854.45/x
  3. Step 3: Cross multiply
    2,315.64x = 3,473.69 × 854.45
  4. Step 4: Simplify right side
    2,315.64x = 2,968,085.81
  5. Step 5: Solve for x
    x = 2,968,085.81/2,315.64
  6. Step 6: Final answer
    x = 1,281.76

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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.