Home / 1,686.12-2,327.34-1,065.48

Finding the Fourth Proportional to 1,686.12, 2,327.34 and 1,065.48

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Solution

The fourth proportional to 1,686.12, 2,327.34 and 1,065.48 is: 1,470.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.12 : 2,327.34 = 1,065.48 : x
  2. Step 2: Convert to fraction form
    1,686.12/2,327.34 = 1,065.48/x
  3. Step 3: Cross multiply
    1,686.12x = 2,327.34 × 1,065.48
  4. Step 4: Simplify right side
    1,686.12x = 2,479,734.22
  5. Step 5: Solve for x
    x = 2,479,734.22/1,686.12
  6. Step 6: Final answer
    x = 1,470.67

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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.