Home / 2,303.51-3,178.86-1,255.55

Finding the Fourth Proportional to 2,303.51, 3,178.86 and 1,255.55

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Solution

The fourth proportional to 2,303.51, 3,178.86 and 1,255.55 is: 1,732.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,303.51 : 3,178.86 = 1,255.55 : x
  2. Step 2: Convert to fraction form
    2,303.51/3,178.86 = 1,255.55/x
  3. Step 3: Cross multiply
    2,303.51x = 3,178.86 × 1,255.55
  4. Step 4: Simplify right side
    2,303.51x = 3,991,217.67
  5. Step 5: Solve for x
    x = 3,991,217.67/2,303.51
  6. Step 6: Final answer
    x = 1,732.67

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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.