Home / 3,421.30-5,130.12-1,776.18

Finding the Fourth Proportional to 3,421.30, 5,130.12 and 1,776.18

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Solution

The fourth proportional to 3,421.30, 5,130.12 and 1,776.18 is: 2,663.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.30 : 5,130.12 = 1,776.18 : x
  2. Step 2: Convert to fraction form
    3,421.30/5,130.12 = 1,776.18/x
  3. Step 3: Cross multiply
    3,421.30x = 5,130.12 × 1,776.18
  4. Step 4: Simplify right side
    3,421.30x = 9,112,016.54
  5. Step 5: Solve for x
    x = 9,112,016.54/3,421.30
  6. Step 6: Final answer
    x = 2,663.32

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1.5x scale

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.