Home / 2,875.40-3,966.78-1,695.96

Finding the Fourth Proportional to 2,875.40, 3,966.78 and 1,695.96

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Solution

The fourth proportional to 2,875.40, 3,966.78 and 1,695.96 is: 2,339.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.40 : 3,966.78 = 1,695.96 : x
  2. Step 2: Convert to fraction form
    2,875.40/3,966.78 = 1,695.96/x
  3. Step 3: Cross multiply
    2,875.40x = 3,966.78 × 1,695.96
  4. Step 4: Simplify right side
    2,875.40x = 6,727,500.21
  5. Step 5: Solve for x
    x = 6,727,500.21/2,875.40
  6. Step 6: Final answer
    x = 2,339.67

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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.