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Finding the Fourth Proportional to 7,135.40, 9,849.10 and 4,900.40

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Solution

The fourth proportional to 7,135.40, 9,849.10 and 4,900.40 is: 6,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.40 : 9,849.10 = 4,900.40 : x
  2. Step 2: Convert to fraction form
    7,135.40/9,849.10 = 4,900.40/x
  3. Step 3: Cross multiply
    7,135.40x = 9,849.10 × 4,900.40
  4. Step 4: Simplify right side
    7,135.40x = 48,264,529.64
  5. Step 5: Solve for x
    x = 48,264,529.64/7,135.40
  6. Step 6: Final answer
    x = 6,764.10

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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.