Home / 5,180.49-7,770.77-1,284.93

Finding the Fourth Proportional to 5,180.49, 7,770.77 and 1,284.93

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Solution

The fourth proportional to 5,180.49, 7,770.77 and 1,284.93 is: 1,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.49 : 7,770.77 = 1,284.93 : x
  2. Step 2: Convert to fraction form
    5,180.49/7,770.77 = 1,284.93/x
  3. Step 3: Cross multiply
    5,180.49x = 7,770.77 × 1,284.93
  4. Step 4: Simplify right side
    5,180.49x = 9,984,893.89
  5. Step 5: Solve for x
    x = 9,984,893.89/5,180.49
  6. Step 6: Final answer
    x = 1,927.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.