Home / 1,890.65-2,609.34-1,448.39

Finding the Fourth Proportional to 1,890.65, 2,609.34 and 1,448.39

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Solution

The fourth proportional to 1,890.65, 2,609.34 and 1,448.39 is: 1,998.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.65 : 2,609.34 = 1,448.39 : x
  2. Step 2: Convert to fraction form
    1,890.65/2,609.34 = 1,448.39/x
  3. Step 3: Cross multiply
    1,890.65x = 2,609.34 × 1,448.39
  4. Step 4: Simplify right side
    1,890.65x = 3,779,341.96
  5. Step 5: Solve for x
    x = 3,779,341.96/1,890.65
  6. Step 6: Final answer
    x = 1,998.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.