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Finding the Fourth Proportional to 5,604, 7,733.52 and 3,120

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Solution

The fourth proportional to 5,604, 7,733.52 and 3,120 is: 4,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,604 : 7,733.52 = 3,120 : x
  2. Step 2: Convert to fraction form
    5,604/7,733.52 = 3,120/x
  3. Step 3: Cross multiply
    5,604x = 7,733.52 × 3,120
  4. Step 4: Simplify right side
    5,604x = 24,128,582.40
  5. Step 5: Solve for x
    x = 24,128,582.40/5,604
  6. Step 6: Final answer
    x = 4,305.60

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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.