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Finding the Fourth Proportional to 5,307.63, 7,307.80 and 4,815.56

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Solution

The fourth proportional to 5,307.63, 7,307.80 and 4,815.56 is: 6,630.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,307.63 : 7,307.80 = 4,815.56 : x
  2. Step 2: Convert to fraction form
    5,307.63/7,307.80 = 4,815.56/x
  3. Step 3: Cross multiply
    5,307.63x = 7,307.80 × 4,815.56
  4. Step 4: Simplify right side
    5,307.63x = 35,191,149.37
  5. Step 5: Solve for x
    x = 35,191,149.37/5,307.63
  6. Step 6: Final answer
    x = 6,630.29

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1.5x scale

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.