Home / 5,320.54-7,980.81-1,424.84

Finding the Fourth Proportional to 5,320.54, 7,980.81 and 1,424.84

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Solution

The fourth proportional to 5,320.54, 7,980.81 and 1,424.84 is: 2,137.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.54 : 7,980.81 = 1,424.84 : x
  2. Step 2: Convert to fraction form
    5,320.54/7,980.81 = 1,424.84/x
  3. Step 3: Cross multiply
    5,320.54x = 7,980.81 × 1,424.84
  4. Step 4: Simplify right side
    5,320.54x = 11,371,377.32
  5. Step 5: Solve for x
    x = 11,371,377.32/5,320.54
  6. Step 6: Final answer
    x = 2,137.26

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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.