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Finding the Fourth Proportional to 5,813.13, 8,718.48 and 1,916.63

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Solution

The fourth proportional to 5,813.13, 8,718.48 and 1,916.63 is: 2,874.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,813.13 : 8,718.48 = 1,916.63 : x
  2. Step 2: Convert to fraction form
    5,813.13/8,718.48 = 1,916.63/x
  3. Step 3: Cross multiply
    5,813.13x = 8,718.48 × 1,916.63
  4. Step 4: Simplify right side
    5,813.13x = 16,710,100.32
  5. Step 5: Solve for x
    x = 16,710,100.32/5,813.13
  6. Step 6: Final answer
    x = 2,874.54

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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.