Home / 3,420.92-5,130.93-1,081.14

Finding the Fourth Proportional to 3,420.92, 5,130.93 and 1,081.14

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Solution

The fourth proportional to 3,420.92, 5,130.93 and 1,081.14 is: 1,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.92 : 5,130.93 = 1,081.14 : x
  2. Step 2: Convert to fraction form
    3,420.92/5,130.93 = 1,081.14/x
  3. Step 3: Cross multiply
    3,420.92x = 5,130.93 × 1,081.14
  4. Step 4: Simplify right side
    3,420.92x = 5,547,253.66
  5. Step 5: Solve for x
    x = 5,547,253.66/3,420.92
  6. Step 6: Final answer
    x = 1,621.57

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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.