Home / 1,639.17-2,455.16-1,511.15

Finding the Fourth Proportional to 1,639.17, 2,455.16 and 1,511.15

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Solution

The fourth proportional to 1,639.17, 2,455.16 and 1,511.15 is: 2,263.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.17 : 2,455.16 = 1,511.15 : x
  2. Step 2: Convert to fraction form
    1,639.17/2,455.16 = 1,511.15/x
  3. Step 3: Cross multiply
    1,639.17x = 2,455.16 × 1,511.15
  4. Step 4: Simplify right side
    1,639.17x = 3,710,095.20
  5. Step 5: Solve for x
    x = 3,710,095.20/1,639.17
  6. Step 6: Final answer
    x = 2,263.40

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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.