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Finding the Fourth Proportional to 4,990.51, 7,485.76 and 1,342.51

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Solution

The fourth proportional to 4,990.51, 7,485.76 and 1,342.51 is: 2,013.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.51 : 7,485.76 = 1,342.51 : x
  2. Step 2: Convert to fraction form
    4,990.51/7,485.76 = 1,342.51/x
  3. Step 3: Cross multiply
    4,990.51x = 7,485.76 × 1,342.51
  4. Step 4: Simplify right side
    4,990.51x = 10,049,700.95
  5. Step 5: Solve for x
    x = 10,049,700.95/4,990.51
  6. Step 6: Final answer
    x = 2,013.76

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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.