Home / 4,329.18-6,489.86-1,555.20

Finding the Fourth Proportional to 4,329.18, 6,489.86 and 1,555.20

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Solution

The fourth proportional to 4,329.18, 6,489.86 and 1,555.20 is: 2,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,329.18 : 6,489.86 = 1,555.20 : x
  2. Step 2: Convert to fraction form
    4,329.18/6,489.86 = 1,555.20/x
  3. Step 3: Cross multiply
    4,329.18x = 6,489.86 × 1,555.20
  4. Step 4: Simplify right side
    4,329.18x = 10,093,030.27
  5. Step 5: Solve for x
    x = 10,093,030.27/4,329.18
  6. Step 6: Final answer
    x = 2,331.40

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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.