Home / 2,162.87-3,240.02-1,430.22

Finding the Fourth Proportional to 2,162.87, 3,240.02 and 1,430.22

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Solution

The fourth proportional to 2,162.87, 3,240.02 and 1,430.22 is: 2,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.87 : 3,240.02 = 1,430.22 : x
  2. Step 2: Convert to fraction form
    2,162.87/3,240.02 = 1,430.22/x
  3. Step 3: Cross multiply
    2,162.87x = 3,240.02 × 1,430.22
  4. Step 4: Simplify right side
    2,162.87x = 4,633,944.98
  5. Step 5: Solve for x
    x = 4,633,944.98/2,162.87
  6. Step 6: Final answer
    x = 2,142.50

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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.