Home / 1,370.40-2,058.08-1,200.30

Finding the Fourth Proportional to 1,370.40, 2,058.08 and 1,200.30

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Solution

The fourth proportional to 1,370.40, 2,058.08 and 1,200.30 is: 1,802.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.40 : 2,058.08 = 1,200.30 : x
  2. Step 2: Convert to fraction form
    1,370.40/2,058.08 = 1,200.30/x
  3. Step 3: Cross multiply
    1,370.40x = 2,058.08 × 1,200.30
  4. Step 4: Simplify right side
    1,370.40x = 2,470,307.42
  5. Step 5: Solve for x
    x = 2,470,307.42/1,370.40
  6. Step 6: Final answer
    x = 1,802.62

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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.