Home / 3,907.34-5,386.51-2,786.32

Finding the Fourth Proportional to 3,907.34, 5,386.51 and 2,786.32

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Solution

The fourth proportional to 3,907.34, 5,386.51 and 2,786.32 is: 3,841.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.34 : 5,386.51 = 2,786.32 : x
  2. Step 2: Convert to fraction form
    3,907.34/5,386.51 = 2,786.32/x
  3. Step 3: Cross multiply
    3,907.34x = 5,386.51 × 2,786.32
  4. Step 4: Simplify right side
    3,907.34x = 15,008,526.61
  5. Step 5: Solve for x
    x = 15,008,526.61/3,907.34
  6. Step 6: Final answer
    x = 3,841.12

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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.