Home / 1,308.53-1,804.32-1,278.29

Finding the Fourth Proportional to 1,308.53, 1,804.32 and 1,278.29

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Solution

The fourth proportional to 1,308.53, 1,804.32 and 1,278.29 is: 1,762.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.53 : 1,804.32 = 1,278.29 : x
  2. Step 2: Convert to fraction form
    1,308.53/1,804.32 = 1,278.29/x
  3. Step 3: Cross multiply
    1,308.53x = 1,804.32 × 1,278.29
  4. Step 4: Simplify right side
    1,308.53x = 2,306,444.21
  5. Step 5: Solve for x
    x = 2,306,444.21/1,308.53
  6. Step 6: Final answer
    x = 1,762.62

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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.