Home / 2,179.36-3,272.60-1,430.08

Finding the Fourth Proportional to 2,179.36, 3,272.60 and 1,430.08

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Solution

The fourth proportional to 2,179.36, 3,272.60 and 1,430.08 is: 2,147.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.36 : 3,272.60 = 1,430.08 : x
  2. Step 2: Convert to fraction form
    2,179.36/3,272.60 = 1,430.08/x
  3. Step 3: Cross multiply
    2,179.36x = 3,272.60 × 1,430.08
  4. Step 4: Simplify right side
    2,179.36x = 4,680,079.81
  5. Step 5: Solve for x
    x = 4,680,079.81/2,179.36
  6. Step 6: Final answer
    x = 2,147.46

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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.