Home / 2,688.28-3,708.34-1,804.67

Finding the Fourth Proportional to 2,688.28, 3,708.34 and 1,804.67

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Solution

The fourth proportional to 2,688.28, 3,708.34 and 1,804.67 is: 2,489.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.28 : 3,708.34 = 1,804.67 : x
  2. Step 2: Convert to fraction form
    2,688.28/3,708.34 = 1,804.67/x
  3. Step 3: Cross multiply
    2,688.28x = 3,708.34 × 1,804.67
  4. Step 4: Simplify right side
    2,688.28x = 6,692,329.95
  5. Step 5: Solve for x
    x = 6,692,329.95/2,688.28
  6. Step 6: Final answer
    x = 2,489.45

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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.