Home / 5,070.60-6,991.56-3,720.06

Finding the Fourth Proportional to 5,070.60, 6,991.56 and 3,720.06

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Solution

The fourth proportional to 5,070.60, 6,991.56 and 3,720.06 is: 5,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,070.60 : 6,991.56 = 3,720.06 : x
  2. Step 2: Convert to fraction form
    5,070.60/6,991.56 = 3,720.06/x
  3. Step 3: Cross multiply
    5,070.60x = 6,991.56 × 3,720.06
  4. Step 4: Simplify right side
    5,070.60x = 26,009,022.69
  5. Step 5: Solve for x
    x = 26,009,022.69/5,070.60
  6. Step 6: Final answer
    x = 5,129.38

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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.