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Finding the Fourth Proportional to 2,509.48, 3,760.74 and 947.88

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Solution

The fourth proportional to 2,509.48, 3,760.74 and 947.88 is: 1,420.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.48 : 3,760.74 = 947.88 : x
  2. Step 2: Convert to fraction form
    2,509.48/3,760.74 = 947.88/x
  3. Step 3: Cross multiply
    2,509.48x = 3,760.74 × 947.88
  4. Step 4: Simplify right side
    2,509.48x = 3,564,730.23
  5. Step 5: Solve for x
    x = 3,564,730.23/2,509.48
  6. Step 6: Final answer
    x = 1,420.51

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1.5x scale

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.