Home / 1,622.30-2,435.40-929.45

Finding the Fourth Proportional to 1,622.30, 2,435.40 and 929.45

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Solution

The fourth proportional to 1,622.30, 2,435.40 and 929.45 is: 1,395.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.30 : 2,435.40 = 929.45 : x
  2. Step 2: Convert to fraction form
    1,622.30/2,435.40 = 929.45/x
  3. Step 3: Cross multiply
    1,622.30x = 2,435.40 × 929.45
  4. Step 4: Simplify right side
    1,622.30x = 2,263,582.53
  5. Step 5: Solve for x
    x = 2,263,582.53/1,622.30
  6. Step 6: Final answer
    x = 1,395.29

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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.