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Finding the Fourth Proportional to 5,590.78, 8,390.00 and 2,303.87

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Solution

The fourth proportional to 5,590.78, 8,390.00 and 2,303.87 is: 3,457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590.78 : 8,390.00 = 2,303.87 : x
  2. Step 2: Convert to fraction form
    5,590.78/8,390.00 = 2,303.87/x
  3. Step 3: Cross multiply
    5,590.78x = 8,390.00 × 2,303.87
  4. Step 4: Simplify right side
    5,590.78x = 19,329,433.11
  5. Step 5: Solve for x
    x = 19,329,433.11/5,590.78
  6. Step 6: Final answer
    x = 3,457.38

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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.