Home / 6,507-8,977.58-3,987.80

Finding the Fourth Proportional to 6,507, 8,977.58 and 3,987.80

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Solution

The fourth proportional to 6,507, 8,977.58 and 3,987.80 is: 5,501.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,507 : 8,977.58 = 3,987.80 : x
  2. Step 2: Convert to fraction form
    6,507/8,977.58 = 3,987.80/x
  3. Step 3: Cross multiply
    6,507x = 8,977.58 × 3,987.80
  4. Step 4: Simplify right side
    6,507x = 35,800,793.52
  5. Step 5: Solve for x
    x = 35,800,793.52/6,507
  6. Step 6: Final answer
    x = 5,501.89

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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.