Home / 1,127.41-1,689.95-433.89

Finding the Fourth Proportional to 1,127.41, 1,689.95 and 433.89

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Solution

The fourth proportional to 1,127.41, 1,689.95 and 433.89 is: 650.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.41 : 1,689.95 = 433.89 : x
  2. Step 2: Convert to fraction form
    1,127.41/1,689.95 = 433.89/x
  3. Step 3: Cross multiply
    1,127.41x = 1,689.95 × 433.89
  4. Step 4: Simplify right side
    1,127.41x = 733,252.41
  5. Step 5: Solve for x
    x = 733,252.41/1,127.41
  6. Step 6: Final answer
    x = 650.39

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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.