Home / 1,429.21-2,142.87-607.27

Finding the Fourth Proportional to 1,429.21, 2,142.87 and 607.27

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Solution

The fourth proportional to 1,429.21, 2,142.87 and 607.27 is: 910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.21 : 2,142.87 = 607.27 : x
  2. Step 2: Convert to fraction form
    1,429.21/2,142.87 = 607.27/x
  3. Step 3: Cross multiply
    1,429.21x = 2,142.87 × 607.27
  4. Step 4: Simplify right side
    1,429.21x = 1,301,300.66
  5. Step 5: Solve for x
    x = 1,301,300.66/1,429.21
  6. Step 6: Final answer
    x = 910.50

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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.