Home / 3,439-5,159.40-1,130.50

Finding the Fourth Proportional to 3,439, 5,159.40 and 1,130.50

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Solution

The fourth proportional to 3,439, 5,159.40 and 1,130.50 is: 1,696.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439 : 5,159.40 = 1,130.50 : x
  2. Step 2: Convert to fraction form
    3,439/5,159.40 = 1,130.50/x
  3. Step 3: Cross multiply
    3,439x = 5,159.40 × 1,130.50
  4. Step 4: Simplify right side
    3,439x = 5,832,701.70
  5. Step 5: Solve for x
    x = 5,832,701.70/3,439
  6. Step 6: Final answer
    x = 1,696.05

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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.