Home / 1,757.51-2,425.21-971.55

Finding the Fourth Proportional to 1,757.51, 2,425.21 and 971.55

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Solution

The fourth proportional to 1,757.51, 2,425.21 and 971.55 is: 1,340.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,757.51 : 2,425.21 = 971.55 : x
  2. Step 2: Convert to fraction form
    1,757.51/2,425.21 = 971.55/x
  3. Step 3: Cross multiply
    1,757.51x = 2,425.21 × 971.55
  4. Step 4: Simplify right side
    1,757.51x = 2,356,212.78
  5. Step 5: Solve for x
    x = 2,356,212.78/1,757.51
  6. Step 6: Final answer
    x = 1,340.65

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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.