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Finding the Fourth Proportional to 1,256.07, 1,880.15 and 1,124.00

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Solution

The fourth proportional to 1,256.07, 1,880.15 and 1,124.00 is: 1,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.07 : 1,880.15 = 1,124.00 : x
  2. Step 2: Convert to fraction form
    1,256.07/1,880.15 = 1,124.00/x
  3. Step 3: Cross multiply
    1,256.07x = 1,880.15 × 1,124.00
  4. Step 4: Simplify right side
    1,256.07x = 2,113,273.58
  5. Step 5: Solve for x
    x = 2,113,273.58/1,256.07
  6. Step 6: Final answer
    x = 1,682.45

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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.