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Finding the Fourth Proportional to 1,661.04, 2,491.83 and 929.07

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Solution

The fourth proportional to 1,661.04, 2,491.83 and 929.07 is: 1,393.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.04 : 2,491.83 = 929.07 : x
  2. Step 2: Convert to fraction form
    1,661.04/2,491.83 = 929.07/x
  3. Step 3: Cross multiply
    1,661.04x = 2,491.83 × 929.07
  4. Step 4: Simplify right side
    1,661.04x = 2,315,084.50
  5. Step 5: Solve for x
    x = 2,315,084.50/1,661.04
  6. Step 6: Final answer
    x = 1,393.76

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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.