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Finding the Fourth Proportional to 1,670.40, 2,510.40 and 1,459.20

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Solution

The fourth proportional to 1,670.40, 2,510.40 and 1,459.20 is: 2,192.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.40 : 2,510.40 = 1,459.20 : x
  2. Step 2: Convert to fraction form
    1,670.40/2,510.40 = 1,459.20/x
  3. Step 3: Cross multiply
    1,670.40x = 2,510.40 × 1,459.20
  4. Step 4: Simplify right side
    1,670.40x = 3,663,175.68
  5. Step 5: Solve for x
    x = 3,663,175.68/1,670.40
  6. Step 6: Final answer
    x = 2,192.99

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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.