Home / 2,303.40-3,178.64-1,308.66

Finding the Fourth Proportional to 2,303.40, 3,178.64 and 1,308.66

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Solution

The fourth proportional to 2,303.40, 3,178.64 and 1,308.66 is: 1,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,303.40 : 3,178.64 = 1,308.66 : x
  2. Step 2: Convert to fraction form
    2,303.40/3,178.64 = 1,308.66/x
  3. Step 3: Cross multiply
    2,303.40x = 3,178.64 × 1,308.66
  4. Step 4: Simplify right side
    2,303.40x = 4,159,750.37
  5. Step 5: Solve for x
    x = 4,159,750.37/2,303.40
  6. Step 6: Final answer
    x = 1,805.91

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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.