Home / 5,135.76-7,703.57-1,240.13

Finding the Fourth Proportional to 5,135.76, 7,703.57 and 1,240.13

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Solution

The fourth proportional to 5,135.76, 7,703.57 and 1,240.13 is: 1,860.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.76 : 7,703.57 = 1,240.13 : x
  2. Step 2: Convert to fraction form
    5,135.76/7,703.57 = 1,240.13/x
  3. Step 3: Cross multiply
    5,135.76x = 7,703.57 × 1,240.13
  4. Step 4: Simplify right side
    5,135.76x = 9,553,383.55
  5. Step 5: Solve for x
    x = 9,553,383.55/5,135.76
  6. Step 6: Final answer
    x = 1,860.17

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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.