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Finding the Fourth Proportional to 5,804.80, 7,999.68 and 5,718.40

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Solution

The fourth proportional to 5,804.80, 7,999.68 and 5,718.40 is: 7,880.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,804.80 : 7,999.68 = 5,718.40 : x
  2. Step 2: Convert to fraction form
    5,804.80/7,999.68 = 5,718.40/x
  3. Step 3: Cross multiply
    5,804.80x = 7,999.68 × 5,718.40
  4. Step 4: Simplify right side
    5,804.80x = 45,745,370.11
  5. Step 5: Solve for x
    x = 45,745,370.11/5,804.80
  6. Step 6: Final answer
    x = 7,880.61

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1.5x scale

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.