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Finding the Fourth Proportional to 2,473.59, 3,709.80 and 912.77

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Solution

The fourth proportional to 2,473.59, 3,709.80 and 912.77 is: 1,368.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,473.59 : 3,709.80 = 912.77 : x
  2. Step 2: Convert to fraction form
    2,473.59/3,709.80 = 912.77/x
  3. Step 3: Cross multiply
    2,473.59x = 3,709.80 × 912.77
  4. Step 4: Simplify right side
    2,473.59x = 3,386,189.51
  5. Step 5: Solve for x
    x = 3,386,189.51/2,473.59
  6. Step 6: Final answer
    x = 1,368.94

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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.