Home / 3,127.32-4,315.68-1,948.32

Finding the Fourth Proportional to 3,127.32, 4,315.68 and 1,948.32

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Solution

The fourth proportional to 3,127.32, 4,315.68 and 1,948.32 is: 2,688.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.32 : 4,315.68 = 1,948.32 : x
  2. Step 2: Convert to fraction form
    3,127.32/4,315.68 = 1,948.32/x
  3. Step 3: Cross multiply
    3,127.32x = 4,315.68 × 1,948.32
  4. Step 4: Simplify right side
    3,127.32x = 8,408,325.66
  5. Step 5: Solve for x
    x = 8,408,325.66/3,127.32
  6. Step 6: Final answer
    x = 2,688.67

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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.