Home / 6,931.18-9,563.40-4,278.70

Finding the Fourth Proportional to 6,931.18, 9,563.40 and 4,278.70

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Solution

The fourth proportional to 6,931.18, 9,563.40 and 4,278.70 is: 5,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.18 : 9,563.40 = 4,278.70 : x
  2. Step 2: Convert to fraction form
    6,931.18/9,563.40 = 4,278.70/x
  3. Step 3: Cross multiply
    6,931.18x = 9,563.40 × 4,278.70
  4. Step 4: Simplify right side
    6,931.18x = 40,918,919.58
  5. Step 5: Solve for x
    x = 40,918,919.58/6,931.18
  6. Step 6: Final answer
    x = 5,903.60

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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.