Home / 5,715.36-7,888.32-3,618

Finding the Fourth Proportional to 5,715.36, 7,888.32 and 3,618

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Solution

The fourth proportional to 5,715.36, 7,888.32 and 3,618 is: 4,993.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.36 : 7,888.32 = 3,618 : x
  2. Step 2: Convert to fraction form
    5,715.36/7,888.32 = 3,618/x
  3. Step 3: Cross multiply
    5,715.36x = 7,888.32 × 3,618
  4. Step 4: Simplify right side
    5,715.36x = 28,539,941.76
  5. Step 5: Solve for x
    x = 28,539,941.76/5,715.36
  6. Step 6: Final answer
    x = 4,993.55

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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.