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Finding the Fourth Proportional to 1,871.06, 2,806.59 and 572.52

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Solution

The fourth proportional to 1,871.06, 2,806.59 and 572.52 is: 858.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.06 : 2,806.59 = 572.52 : x
  2. Step 2: Convert to fraction form
    1,871.06/2,806.59 = 572.52/x
  3. Step 3: Cross multiply
    1,871.06x = 2,806.59 × 572.52
  4. Step 4: Simplify right side
    1,871.06x = 1,606,812.01
  5. Step 5: Solve for x
    x = 1,606,812.01/1,871.06
  6. Step 6: Final answer
    x = 858.77

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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.