Home / 2,980.77-4,118.40-2,356.08

Finding the Fourth Proportional to 2,980.77, 4,118.40 and 2,356.08

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Solution

The fourth proportional to 2,980.77, 4,118.40 and 2,356.08 is: 3,255.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.77 : 4,118.40 = 2,356.08 : x
  2. Step 2: Convert to fraction form
    2,980.77/4,118.40 = 2,356.08/x
  3. Step 3: Cross multiply
    2,980.77x = 4,118.40 × 2,356.08
  4. Step 4: Simplify right side
    2,980.77x = 9,703,279.87
  5. Step 5: Solve for x
    x = 9,703,279.87/2,980.77
  6. Step 6: Final answer
    x = 3,255.29

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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.