Home / 1,521.52-2,099.93-1,427.72

Finding the Fourth Proportional to 1,521.52, 2,099.93 and 1,427.72

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Solution

The fourth proportional to 1,521.52, 2,099.93 and 1,427.72 is: 1,970.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.52 : 2,099.93 = 1,427.72 : x
  2. Step 2: Convert to fraction form
    1,521.52/2,099.93 = 1,427.72/x
  3. Step 3: Cross multiply
    1,521.52x = 2,099.93 × 1,427.72
  4. Step 4: Simplify right side
    1,521.52x = 2,998,094.42
  5. Step 5: Solve for x
    x = 2,998,094.42/1,521.52
  6. Step 6: Final answer
    x = 1,970.46

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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.