Home / 3,009.40-4,154.40-1,890.91

Finding the Fourth Proportional to 3,009.40, 4,154.40 and 1,890.91

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Solution

The fourth proportional to 3,009.40, 4,154.40 and 1,890.91 is: 2,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.40 : 4,154.40 = 1,890.91 : x
  2. Step 2: Convert to fraction form
    3,009.40/4,154.40 = 1,890.91/x
  3. Step 3: Cross multiply
    3,009.40x = 4,154.40 × 1,890.91
  4. Step 4: Simplify right side
    3,009.40x = 7,855,596.50
  5. Step 5: Solve for x
    x = 7,855,596.50/3,009.40
  6. Step 6: Final answer
    x = 2,610.35

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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.