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Finding the Fourth Proportional to 5,471.16, 8,206.74 and 2,391

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Solution

The fourth proportional to 5,471.16, 8,206.74 and 2,391 is: 3,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,471.16 : 8,206.74 = 2,391 : x
  2. Step 2: Convert to fraction form
    5,471.16/8,206.74 = 2,391/x
  3. Step 3: Cross multiply
    5,471.16x = 8,206.74 × 2,391
  4. Step 4: Simplify right side
    5,471.16x = 19,622,315.34
  5. Step 5: Solve for x
    x = 19,622,315.34/5,471.16
  6. Step 6: Final answer
    x = 3,586.50

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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.