Home / 1,307.32-1,968.75-1,178.83

Finding the Fourth Proportional to 1,307.32, 1,968.75 and 1,178.83

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Solution

The fourth proportional to 1,307.32, 1,968.75 and 1,178.83 is: 1,775.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.32 : 1,968.75 = 1,178.83 : x
  2. Step 2: Convert to fraction form
    1,307.32/1,968.75 = 1,178.83/x
  3. Step 3: Cross multiply
    1,307.32x = 1,968.75 × 1,178.83
  4. Step 4: Simplify right side
    1,307.32x = 2,320,821.56
  5. Step 5: Solve for x
    x = 2,320,821.56/1,307.32
  6. Step 6: Final answer
    x = 1,775.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.