Home / 1,430.88-1,974.60-841.84

Finding the Fourth Proportional to 1,430.88, 1,974.60 and 841.84

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Solution

The fourth proportional to 1,430.88, 1,974.60 and 841.84 is: 1,161.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.88 : 1,974.60 = 841.84 : x
  2. Step 2: Convert to fraction form
    1,430.88/1,974.60 = 841.84/x
  3. Step 3: Cross multiply
    1,430.88x = 1,974.60 × 841.84
  4. Step 4: Simplify right side
    1,430.88x = 1,662,297.26
  5. Step 5: Solve for x
    x = 1,662,297.26/1,430.88
  6. Step 6: Final answer
    x = 1,161.73

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1.5x scale

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.