Home / 1,542.04-2,127.90-912.64

Finding the Fourth Proportional to 1,542.04, 2,127.90 and 912.64

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Solution

The fourth proportional to 1,542.04, 2,127.90 and 912.64 is: 1,259.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.04 : 2,127.90 = 912.64 : x
  2. Step 2: Convert to fraction form
    1,542.04/2,127.90 = 912.64/x
  3. Step 3: Cross multiply
    1,542.04x = 2,127.90 × 912.64
  4. Step 4: Simplify right side
    1,542.04x = 1,942,006.66
  5. Step 5: Solve for x
    x = 1,942,006.66/1,542.04
  6. Step 6: Final answer
    x = 1,259.38

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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.