Home / 1,127.15-1,689.57-433.64

Finding the Fourth Proportional to 1,127.15, 1,689.57 and 433.64

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Solution

The fourth proportional to 1,127.15, 1,689.57 and 433.64 is: 650.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.15 : 1,689.57 = 433.64 : x
  2. Step 2: Convert to fraction form
    1,127.15/1,689.57 = 433.64/x
  3. Step 3: Cross multiply
    1,127.15x = 1,689.57 × 433.64
  4. Step 4: Simplify right side
    1,127.15x = 732,656.69
  5. Step 5: Solve for x
    x = 732,656.69/1,127.15
  6. Step 6: Final answer
    x = 650.01

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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.