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Finding the Fourth Proportional to 2,491.76, 3,437.76 and 1,533.68

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Solution

The fourth proportional to 2,491.76, 3,437.76 and 1,533.68 is: 2,115.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.76 : 3,437.76 = 1,533.68 : x
  2. Step 2: Convert to fraction form
    2,491.76/3,437.76 = 1,533.68/x
  3. Step 3: Cross multiply
    2,491.76x = 3,437.76 × 1,533.68
  4. Step 4: Simplify right side
    2,491.76x = 5,272,423.76
  5. Step 5: Solve for x
    x = 5,272,423.76/2,491.76
  6. Step 6: Final answer
    x = 2,115.95

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1.5x scale

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.