Home / 5,058.38-6,980.64-2,820.18

Finding the Fourth Proportional to 5,058.38, 6,980.64 and 2,820.18

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Solution

The fourth proportional to 5,058.38, 6,980.64 and 2,820.18 is: 3,891.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,058.38 : 6,980.64 = 2,820.18 : x
  2. Step 2: Convert to fraction form
    5,058.38/6,980.64 = 2,820.18/x
  3. Step 3: Cross multiply
    5,058.38x = 6,980.64 × 2,820.18
  4. Step 4: Simplify right side
    5,058.38x = 19,686,661.32
  5. Step 5: Solve for x
    x = 19,686,661.32/5,058.38
  6. Step 6: Final answer
    x = 3,891.89

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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.