Home / 1,438.03-2,155.60-1,005.07

Finding the Fourth Proportional to 1,438.03, 2,155.60 and 1,005.07

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Solution

The fourth proportional to 1,438.03, 2,155.60 and 1,005.07 is: 1,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.03 : 2,155.60 = 1,005.07 : x
  2. Step 2: Convert to fraction form
    1,438.03/2,155.60 = 1,005.07/x
  3. Step 3: Cross multiply
    1,438.03x = 2,155.60 × 1,005.07
  4. Step 4: Simplify right side
    1,438.03x = 2,166,528.89
  5. Step 5: Solve for x
    x = 2,166,528.89/1,438.03
  6. Step 6: Final answer
    x = 1,506.60

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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.