Home / 1,865.65-2,793.08-1,405.37

Finding the Fourth Proportional to 1,865.65, 2,793.08 and 1,405.37

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Solution

The fourth proportional to 1,865.65, 2,793.08 and 1,405.37 is: 2,103.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.65 : 2,793.08 = 1,405.37 : x
  2. Step 2: Convert to fraction form
    1,865.65/2,793.08 = 1,405.37/x
  3. Step 3: Cross multiply
    1,865.65x = 2,793.08 × 1,405.37
  4. Step 4: Simplify right side
    1,865.65x = 3,925,303.81
  5. Step 5: Solve for x
    x = 3,925,303.81/1,865.65
  6. Step 6: Final answer
    x = 2,103.98

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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.