Home / 1,038.03-1,431.30-848.70

Finding the Fourth Proportional to 1,038.03, 1,431.30 and 848.70

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Solution

The fourth proportional to 1,038.03, 1,431.30 and 848.70 is: 1,170.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.03 : 1,431.30 = 848.70 : x
  2. Step 2: Convert to fraction form
    1,038.03/1,431.30 = 848.70/x
  3. Step 3: Cross multiply
    1,038.03x = 1,431.30 × 848.70
  4. Step 4: Simplify right side
    1,038.03x = 1,214,744.31
  5. Step 5: Solve for x
    x = 1,214,744.31/1,038.03
  6. Step 6: Final answer
    x = 1,170.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.