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Finding the Fourth Proportional to 1,510.92, 2,085.12 and 847.89

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Solution

The fourth proportional to 1,510.92, 2,085.12 and 847.89 is: 1,170.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.92 : 2,085.12 = 847.89 : x
  2. Step 2: Convert to fraction form
    1,510.92/2,085.12 = 847.89/x
  3. Step 3: Cross multiply
    1,510.92x = 2,085.12 × 847.89
  4. Step 4: Simplify right side
    1,510.92x = 1,767,952.40
  5. Step 5: Solve for x
    x = 1,767,952.40/1,510.92
  6. Step 6: Final answer
    x = 1,170.12

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