Home / 1,431.34-1,974.36-1,058.20

Finding the Fourth Proportional to 1,431.34, 1,974.36 and 1,058.20

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Solution

The fourth proportional to 1,431.34, 1,974.36 and 1,058.20 is: 1,459.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.34 : 1,974.36 = 1,058.20 : x
  2. Step 2: Convert to fraction form
    1,431.34/1,974.36 = 1,058.20/x
  3. Step 3: Cross multiply
    1,431.34x = 1,974.36 × 1,058.20
  4. Step 4: Simplify right side
    1,431.34x = 2,089,267.75
  5. Step 5: Solve for x
    x = 2,089,267.75/1,431.34
  6. Step 6: Final answer
    x = 1,459.66

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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.