Home / 1,430.14-2,145.12-607.90

Finding the Fourth Proportional to 1,430.14, 2,145.12 and 607.90

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Solution

The fourth proportional to 1,430.14, 2,145.12 and 607.90 is: 911.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.14 : 2,145.12 = 607.90 : x
  2. Step 2: Convert to fraction form
    1,430.14/2,145.12 = 607.90/x
  3. Step 3: Cross multiply
    1,430.14x = 2,145.12 × 607.90
  4. Step 4: Simplify right side
    1,430.14x = 1,304,018.45
  5. Step 5: Solve for x
    x = 1,304,018.45/1,430.14
  6. Step 6: Final answer
    x = 911.81

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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.