Home / 1,541.49-2,126.70-912.03

Finding the Fourth Proportional to 1,541.49, 2,126.70 and 912.03

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Solution

The fourth proportional to 1,541.49, 2,126.70 and 912.03 is: 1,258.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.49 : 2,126.70 = 912.03 : x
  2. Step 2: Convert to fraction form
    1,541.49/2,126.70 = 912.03/x
  3. Step 3: Cross multiply
    1,541.49x = 2,126.70 × 912.03
  4. Step 4: Simplify right side
    1,541.49x = 1,939,614.20
  5. Step 5: Solve for x
    x = 1,939,614.20/1,541.49
  6. Step 6: Final answer
    x = 1,258.27

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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.