Home / 1,424.70-2,137.14-384.72

Finding the Fourth Proportional to 1,424.70, 2,137.14 and 384.72

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Solution

The fourth proportional to 1,424.70, 2,137.14 and 384.72 is: 577.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.70 : 2,137.14 = 384.72 : x
  2. Step 2: Convert to fraction form
    1,424.70/2,137.14 = 384.72/x
  3. Step 3: Cross multiply
    1,424.70x = 2,137.14 × 384.72
  4. Step 4: Simplify right side
    1,424.70x = 822,200.50
  5. Step 5: Solve for x
    x = 822,200.50/1,424.70
  6. Step 6: Final answer
    x = 577.10

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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.