Home / 4,990.68-7,487.28-1,870.69

Finding the Fourth Proportional to 4,990.68, 7,487.28 and 1,870.69

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Solution

The fourth proportional to 4,990.68, 7,487.28 and 1,870.69 is: 2,806.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.68 : 7,487.28 = 1,870.69 : x
  2. Step 2: Convert to fraction form
    4,990.68/7,487.28 = 1,870.69/x
  3. Step 3: Cross multiply
    4,990.68x = 7,487.28 × 1,870.69
  4. Step 4: Simplify right side
    4,990.68x = 14,006,384.36
  5. Step 5: Solve for x
    x = 14,006,384.36/4,990.68
  6. Step 6: Final answer
    x = 2,806.51

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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.