Home / 3,430.04-5,132.10-2,128.28

Finding the Fourth Proportional to 3,430.04, 5,132.10 and 2,128.28

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Solution

The fourth proportional to 3,430.04, 5,132.10 and 2,128.28 is: 3,184.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.04 : 5,132.10 = 2,128.28 : x
  2. Step 2: Convert to fraction form
    3,430.04/5,132.10 = 2,128.28/x
  3. Step 3: Cross multiply
    3,430.04x = 5,132.10 × 2,128.28
  4. Step 4: Simplify right side
    3,430.04x = 10,922,545.79
  5. Step 5: Solve for x
    x = 10,922,545.79/3,430.04
  6. Step 6: Final answer
    x = 3,184.38

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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.