Home / 1,265.27-1,895.67-1,127.67

Finding the Fourth Proportional to 1,265.27, 1,895.67 and 1,127.67

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Solution

The fourth proportional to 1,265.27, 1,895.67 and 1,127.67 is: 1,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.27 : 1,895.67 = 1,127.67 : x
  2. Step 2: Convert to fraction form
    1,265.27/1,895.67 = 1,127.67/x
  3. Step 3: Cross multiply
    1,265.27x = 1,895.67 × 1,127.67
  4. Step 4: Simplify right side
    1,265.27x = 2,137,685.34
  5. Step 5: Solve for x
    x = 2,137,685.34/1,265.27
  6. Step 6: Final answer
    x = 1,689.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.