Home / 4,318.79-6,478.88-1,396.40

Finding the Fourth Proportional to 4,318.79, 6,478.88 and 1,396.40

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Solution

The fourth proportional to 4,318.79, 6,478.88 and 1,396.40 is: 2,094.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,318.79 : 6,478.88 = 1,396.40 : x
  2. Step 2: Convert to fraction form
    4,318.79/6,478.88 = 1,396.40/x
  3. Step 3: Cross multiply
    4,318.79x = 6,478.88 × 1,396.40
  4. Step 4: Simplify right side
    4,318.79x = 9,047,068.66
  5. Step 5: Solve for x
    x = 9,047,068.66/4,318.79
  6. Step 6: Final answer
    x = 2,094.82

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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.