Home / 1,615.68-2,228.88-1,025.76

Finding the Fourth Proportional to 1,615.68, 2,228.88 and 1,025.76

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Solution

The fourth proportional to 1,615.68, 2,228.88 and 1,025.76 is: 1,415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.68 : 2,228.88 = 1,025.76 : x
  2. Step 2: Convert to fraction form
    1,615.68/2,228.88 = 1,025.76/x
  3. Step 3: Cross multiply
    1,615.68x = 2,228.88 × 1,025.76
  4. Step 4: Simplify right side
    1,615.68x = 2,286,295.95
  5. Step 5: Solve for x
    x = 2,286,295.95/1,615.68
  6. Step 6: Final answer
    x = 1,415.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.