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Finding the Fourth Proportional to 1,875.42, 2,812.79 and 626.05

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Solution

The fourth proportional to 1,875.42, 2,812.79 and 626.05 is: 938.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.42 : 2,812.79 = 626.05 : x
  2. Step 2: Convert to fraction form
    1,875.42/2,812.79 = 626.05/x
  3. Step 3: Cross multiply
    1,875.42x = 2,812.79 × 626.05
  4. Step 4: Simplify right side
    1,875.42x = 1,760,936.44
  5. Step 5: Solve for x
    x = 1,760,936.44/1,875.42
  6. Step 6: Final answer
    x = 938.96

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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.