Home / 1,945.24-2,915.26-711.49

Finding the Fourth Proportional to 1,945.24, 2,915.26 and 711.49

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Solution

The fourth proportional to 1,945.24, 2,915.26 and 711.49 is: 1,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.24 : 2,915.26 = 711.49 : x
  2. Step 2: Convert to fraction form
    1,945.24/2,915.26 = 711.49/x
  3. Step 3: Cross multiply
    1,945.24x = 2,915.26 × 711.49
  4. Step 4: Simplify right side
    1,945.24x = 2,074,178.34
  5. Step 5: Solve for x
    x = 2,074,178.34/1,945.24
  6. Step 6: Final answer
    x = 1,066.28

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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.