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Finding the Fourth Proportional to 2,867.51, 4,298.53 and 918.38

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Solution

The fourth proportional to 2,867.51, 4,298.53 and 918.38 is: 1,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.51 : 4,298.53 = 918.38 : x
  2. Step 2: Convert to fraction form
    2,867.51/4,298.53 = 918.38/x
  3. Step 3: Cross multiply
    2,867.51x = 4,298.53 × 918.38
  4. Step 4: Simplify right side
    2,867.51x = 3,947,683.98
  5. Step 5: Solve for x
    x = 3,947,683.98/2,867.51
  6. Step 6: Final answer
    x = 1,376.69

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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.