Home / 1,639.02-2,443.10-1,507.80

Finding the Fourth Proportional to 1,639.02, 2,443.10 and 1,507.80

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Solution

The fourth proportional to 1,639.02, 2,443.10 and 1,507.80 is: 2,247.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.02 : 2,443.10 = 1,507.80 : x
  2. Step 2: Convert to fraction form
    1,639.02/2,443.10 = 1,507.80/x
  3. Step 3: Cross multiply
    1,639.02x = 2,443.10 × 1,507.80
  4. Step 4: Simplify right side
    1,639.02x = 3,683,698.64
  5. Step 5: Solve for x
    x = 3,683,698.64/1,639.02
  6. Step 6: Final answer
    x = 2,247.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.