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Finding the Fourth Proportional to 1,875.50, 2,813.90 and 836.24

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Solution

The fourth proportional to 1,875.50, 2,813.90 and 836.24 is: 1,254.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.50 : 2,813.90 = 836.24 : x
  2. Step 2: Convert to fraction form
    1,875.50/2,813.90 = 836.24/x
  3. Step 3: Cross multiply
    1,875.50x = 2,813.90 × 836.24
  4. Step 4: Simplify right side
    1,875.50x = 2,353,095.74
  5. Step 5: Solve for x
    x = 2,353,095.74/1,875.50
  6. Step 6: Final answer
    x = 1,254.65

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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.