Home / 5,320.59-7,980.77-1,425.00

Finding the Fourth Proportional to 5,320.59, 7,980.77 and 1,425.00

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Solution

The fourth proportional to 5,320.59, 7,980.77 and 1,425.00 is: 2,137.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.59 : 7,980.77 = 1,425.00 : x
  2. Step 2: Convert to fraction form
    5,320.59/7,980.77 = 1,425.00/x
  3. Step 3: Cross multiply
    5,320.59x = 7,980.77 × 1,425.00
  4. Step 4: Simplify right side
    5,320.59x = 11,372,550.22
  5. Step 5: Solve for x
    x = 11,372,550.22/5,320.59
  6. Step 6: Final answer
    x = 2,137.46

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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.