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Finding the Fourth Proportional to 4,398.40, 6,590.40 and 3,750.40

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Solution

The fourth proportional to 4,398.40, 6,590.40 and 3,750.40 is: 5,619.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,398.40 : 6,590.40 = 3,750.40 : x
  2. Step 2: Convert to fraction form
    4,398.40/6,590.40 = 3,750.40/x
  3. Step 3: Cross multiply
    4,398.40x = 6,590.40 × 3,750.40
  4. Step 4: Simplify right side
    4,398.40x = 24,716,636.16
  5. Step 5: Solve for x
    x = 24,716,636.16/4,398.40
  6. Step 6: Final answer
    x = 5,619.46

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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.