Home / 1,541.49-2,125.74-1,386.51

Finding the Fourth Proportional to 1,541.49, 2,125.74 and 1,386.51

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Solution

The fourth proportional to 1,541.49, 2,125.74 and 1,386.51 is: 1,912.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.49 : 2,125.74 = 1,386.51 : x
  2. Step 2: Convert to fraction form
    1,541.49/2,125.74 = 1,386.51/x
  3. Step 3: Cross multiply
    1,541.49x = 2,125.74 × 1,386.51
  4. Step 4: Simplify right side
    1,541.49x = 2,947,359.77
  5. Step 5: Solve for x
    x = 2,947,359.77/1,541.49
  6. Step 6: Final answer
    x = 1,912.02

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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.