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Finding the Fourth Proportional to 6.19, 8.55 and 5.77

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Solution

The fourth proportional to 6.19, 8.55 and 5.77 is: 7.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.19 : 8.55 = 5.77 : x
  2. Step 2: Convert to fraction form
    6.19/8.55 = 5.77/x
  3. Step 3: Cross multiply
    6.19x = 8.55 × 5.77
  4. Step 4: Simplify right side
    6.19x = 49.33
  5. Step 5: Solve for x
    x = 49.33/6.19
  6. Step 6: Final answer
    x = 7.97

Related Problems

Find fourth proportional to 3.10, 4.28 and 2.89
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Double scale
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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.