Home / 5,119.53-7,064.80-3,130.08

Finding the Fourth Proportional to 5,119.53, 7,064.80 and 3,130.08

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Solution

The fourth proportional to 5,119.53, 7,064.80 and 3,130.08 is: 4,319.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.53 : 7,064.80 = 3,130.08 : x
  2. Step 2: Convert to fraction form
    5,119.53/7,064.80 = 3,130.08/x
  3. Step 3: Cross multiply
    5,119.53x = 7,064.80 × 3,130.08
  4. Step 4: Simplify right side
    5,119.53x = 22,113,389.18
  5. Step 5: Solve for x
    x = 22,113,389.18/5,119.53
  6. Step 6: Final answer
    x = 4,319.42

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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.