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Finding the Fourth Proportional to 4,391.64, 6,590.16 and 2,421.18

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Solution

The fourth proportional to 4,391.64, 6,590.16 and 2,421.18 is: 3,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,391.64 : 6,590.16 = 2,421.18 : x
  2. Step 2: Convert to fraction form
    4,391.64/6,590.16 = 2,421.18/x
  3. Step 3: Cross multiply
    4,391.64x = 6,590.16 × 2,421.18
  4. Step 4: Simplify right side
    4,391.64x = 15,955,963.59
  5. Step 5: Solve for x
    x = 15,955,963.59/4,391.64
  6. Step 6: Final answer
    x = 3,633.26

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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.