Home / 1,929.40-2,890.05-1,516.57

Finding the Fourth Proportional to 1,929.40, 2,890.05 and 1,516.57

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Solution

The fourth proportional to 1,929.40, 2,890.05 and 1,516.57 is: 2,271.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.40 : 2,890.05 = 1,516.57 : x
  2. Step 2: Convert to fraction form
    1,929.40/2,890.05 = 1,516.57/x
  3. Step 3: Cross multiply
    1,929.40x = 2,890.05 × 1,516.57
  4. Step 4: Simplify right side
    1,929.40x = 4,382,963.13
  5. Step 5: Solve for x
    x = 4,382,963.13/1,929.40
  6. Step 6: Final answer
    x = 2,271.67

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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.