Home / 2,415.27-3,624.95-1,320.40

Finding the Fourth Proportional to 2,415.27, 3,624.95 and 1,320.40

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Solution

The fourth proportional to 2,415.27, 3,624.95 and 1,320.40 is: 1,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.27 : 3,624.95 = 1,320.40 : x
  2. Step 2: Convert to fraction form
    2,415.27/3,624.95 = 1,320.40/x
  3. Step 3: Cross multiply
    2,415.27x = 3,624.95 × 1,320.40
  4. Step 4: Simplify right side
    2,415.27x = 4,786,391.81
  5. Step 5: Solve for x
    x = 4,786,391.81/2,415.27
  6. Step 6: Final answer
    x = 1,981.72

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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.