Home / 1,551.51-2,139.27-1,157.85

Finding the Fourth Proportional to 1,551.51, 2,139.27 and 1,157.85

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Solution

The fourth proportional to 1,551.51, 2,139.27 and 1,157.85 is: 1,596.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.51 : 2,139.27 = 1,157.85 : x
  2. Step 2: Convert to fraction form
    1,551.51/2,139.27 = 1,157.85/x
  3. Step 3: Cross multiply
    1,551.51x = 2,139.27 × 1,157.85
  4. Step 4: Simplify right side
    1,551.51x = 2,476,953.77
  5. Step 5: Solve for x
    x = 2,476,953.77/1,551.51
  6. Step 6: Final answer
    x = 1,596.48

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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.