Home / 1,430.79-1,974.50-801.35

Finding the Fourth Proportional to 1,430.79, 1,974.50 and 801.35

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Solution

The fourth proportional to 1,430.79, 1,974.50 and 801.35 is: 1,105.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.79 : 1,974.50 = 801.35 : x
  2. Step 2: Convert to fraction form
    1,430.79/1,974.50 = 801.35/x
  3. Step 3: Cross multiply
    1,430.79x = 1,974.50 × 801.35
  4. Step 4: Simplify right side
    1,430.79x = 1,582,262.11
  5. Step 5: Solve for x
    x = 1,582,262.11/1,430.79
  6. Step 6: Final answer
    x = 1,105.87

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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.