Home / 10,458.90-15,690.26-3,439.30

Finding the Fourth Proportional to 10,458.90, 15,690.26 and 3,439.30

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Solution

The fourth proportional to 10,458.90, 15,690.26 and 3,439.30 is: 5,159.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,458.90 : 15,690.26 = 3,439.30 : x
  2. Step 2: Convert to fraction form
    10,458.90/15,690.26 = 3,439.30/x
  3. Step 3: Cross multiply
    10,458.90x = 15,690.26 × 3,439.30
  4. Step 4: Simplify right side
    10,458.90x = 53,963,511.22
  5. Step 5: Solve for x
    x = 53,963,511.22/10,458.90
  6. Step 6: Final answer
    x = 5,159.58

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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.