Home / 3,130.30-4,319.08-2,137.65

Finding the Fourth Proportional to 3,130.30, 4,319.08 and 2,137.65

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Solution

The fourth proportional to 3,130.30, 4,319.08 and 2,137.65 is: 2,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.30 : 4,319.08 = 2,137.65 : x
  2. Step 2: Convert to fraction form
    3,130.30/4,319.08 = 2,137.65/x
  3. Step 3: Cross multiply
    3,130.30x = 4,319.08 × 2,137.65
  4. Step 4: Simplify right side
    3,130.30x = 9,232,681.36
  5. Step 5: Solve for x
    x = 9,232,681.36/3,130.30
  6. Step 6: Final answer
    x = 2,949.46

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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.