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Finding the Fourth Proportional to 1,501.51, 2,071.50 and 871.93

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Solution

The fourth proportional to 1,501.51, 2,071.50 and 871.93 is: 1,202.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.51 : 2,071.50 = 871.93 : x
  2. Step 2: Convert to fraction form
    1,501.51/2,071.50 = 871.93/x
  3. Step 3: Cross multiply
    1,501.51x = 2,071.50 × 871.93
  4. Step 4: Simplify right side
    1,501.51x = 1,806,203.00
  5. Step 5: Solve for x
    x = 1,806,203.00/1,501.51
  6. Step 6: Final answer
    x = 1,202.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.