Home / 2,980.07-4,468.28-1,420.01

Finding the Fourth Proportional to 2,980.07, 4,468.28 and 1,420.01

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Solution

The fourth proportional to 2,980.07, 4,468.28 and 1,420.01 is: 2,129.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.07 : 4,468.28 = 1,420.01 : x
  2. Step 2: Convert to fraction form
    2,980.07/4,468.28 = 1,420.01/x
  3. Step 3: Cross multiply
    2,980.07x = 4,468.28 × 1,420.01
  4. Step 4: Simplify right side
    2,980.07x = 6,344,972.84
  5. Step 5: Solve for x
    x = 6,344,972.84/2,980.07
  6. Step 6: Final answer
    x = 2,129.14

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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.