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Finding the Fourth Proportional to 3,345.10, 5,017.59 and 879.94

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Solution

The fourth proportional to 3,345.10, 5,017.59 and 879.94 is: 1,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,345.10 : 5,017.59 = 879.94 : x
  2. Step 2: Convert to fraction form
    3,345.10/5,017.59 = 879.94/x
  3. Step 3: Cross multiply
    3,345.10x = 5,017.59 × 879.94
  4. Step 4: Simplify right side
    3,345.10x = 4,415,178.14
  5. Step 5: Solve for x
    x = 4,415,178.14/3,345.10
  6. Step 6: Final answer
    x = 1,319.89

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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.