Home / 1,180.15-1,628.90-714.55

Finding the Fourth Proportional to 1,180.15, 1,628.90 and 714.55

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Solution

The fourth proportional to 1,180.15, 1,628.90 and 714.55 is: 986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.15 : 1,628.90 = 714.55 : x
  2. Step 2: Convert to fraction form
    1,180.15/1,628.90 = 714.55/x
  3. Step 3: Cross multiply
    1,180.15x = 1,628.90 × 714.55
  4. Step 4: Simplify right side
    1,180.15x = 1,163,926.92
  5. Step 5: Solve for x
    x = 1,163,926.92/1,180.15
  6. Step 6: Final answer
    x = 986.25

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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.