Home / 1,431.16-2,145.00-607.70

Finding the Fourth Proportional to 1,431.16, 2,145.00 and 607.70

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Solution

The fourth proportional to 1,431.16, 2,145.00 and 607.70 is: 910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.16 : 2,145.00 = 607.70 : x
  2. Step 2: Convert to fraction form
    1,431.16/2,145.00 = 607.70/x
  3. Step 3: Cross multiply
    1,431.16x = 2,145.00 × 607.70
  4. Step 4: Simplify right side
    1,431.16x = 1,303,509.62
  5. Step 5: Solve for x
    x = 1,303,509.62/1,431.16
  6. Step 6: Final answer
    x = 910.81

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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.