Home / 6,870.87-10,303.86-4,239.78

Finding the Fourth Proportional to 6,870.87, 10,303.86 and 4,239.78

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Solution

The fourth proportional to 6,870.87, 10,303.86 and 4,239.78 is: 6,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.87 : 10,303.86 = 4,239.78 : x
  2. Step 2: Convert to fraction form
    6,870.87/10,303.86 = 4,239.78/x
  3. Step 3: Cross multiply
    6,870.87x = 10,303.86 × 4,239.78
  4. Step 4: Simplify right side
    6,870.87x = 43,686,099.55
  5. Step 5: Solve for x
    x = 43,686,099.55/6,870.87
  6. Step 6: Final answer
    x = 6,358.16

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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.