Home / 1,913.45-2,870.06-614.81

Finding the Fourth Proportional to 1,913.45, 2,870.06 and 614.81

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Solution

The fourth proportional to 1,913.45, 2,870.06 and 614.81 is: 922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.45 : 2,870.06 = 614.81 : x
  2. Step 2: Convert to fraction form
    1,913.45/2,870.06 = 614.81/x
  3. Step 3: Cross multiply
    1,913.45x = 2,870.06 × 614.81
  4. Step 4: Simplify right side
    1,913.45x = 1,764,545.69
  5. Step 5: Solve for x
    x = 1,764,545.69/1,913.45
  6. Step 6: Final answer
    x = 922.18

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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.