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Finding the Fourth Proportional to 1,595.61, 2,389.93 and 1,131.98

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Solution

The fourth proportional to 1,595.61, 2,389.93 and 1,131.98 is: 1,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,595.61 : 2,389.93 = 1,131.98 : x
  2. Step 2: Convert to fraction form
    1,595.61/2,389.93 = 1,131.98/x
  3. Step 3: Cross multiply
    1,595.61x = 2,389.93 × 1,131.98
  4. Step 4: Simplify right side
    1,595.61x = 2,705,352.96
  5. Step 5: Solve for x
    x = 2,705,352.96/1,595.61
  6. Step 6: Final answer
    x = 1,695.50

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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.