Home / 2,303.76-3,178.96-1,309.08

Finding the Fourth Proportional to 2,303.76, 3,178.96 and 1,309.08

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Solution

The fourth proportional to 2,303.76, 3,178.96 and 1,309.08 is: 1,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,303.76 : 3,178.96 = 1,309.08 : x
  2. Step 2: Convert to fraction form
    2,303.76/3,178.96 = 1,309.08/x
  3. Step 3: Cross multiply
    2,303.76x = 3,178.96 × 1,309.08
  4. Step 4: Simplify right side
    2,303.76x = 4,161,512.96
  5. Step 5: Solve for x
    x = 4,161,512.96/2,303.76
  6. Step 6: Final answer
    x = 1,806.40

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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.