Home / 6,895.56-9,515.46-3,870.40

Finding the Fourth Proportional to 6,895.56, 9,515.46 and 3,870.40

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Solution

The fourth proportional to 6,895.56, 9,515.46 and 3,870.40 is: 5,340.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,895.56 : 9,515.46 = 3,870.40 : x
  2. Step 2: Convert to fraction form
    6,895.56/9,515.46 = 3,870.40/x
  3. Step 3: Cross multiply
    6,895.56x = 9,515.46 × 3,870.40
  4. Step 4: Simplify right side
    6,895.56x = 36,828,588.81
  5. Step 5: Solve for x
    x = 36,828,588.81/6,895.56
  6. Step 6: Final answer
    x = 5,340.92

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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.