Home / 2,415.79-3,624.40-1,389.07

Finding the Fourth Proportional to 2,415.79, 3,624.40 and 1,389.07

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Solution

The fourth proportional to 2,415.79, 3,624.40 and 1,389.07 is: 2,084.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.79 : 3,624.40 = 1,389.07 : x
  2. Step 2: Convert to fraction form
    2,415.79/3,624.40 = 1,389.07/x
  3. Step 3: Cross multiply
    2,415.79x = 3,624.40 × 1,389.07
  4. Step 4: Simplify right side
    2,415.79x = 5,034,527.19
  5. Step 5: Solve for x
    x = 5,034,527.19/2,415.79
  6. Step 6: Final answer
    x = 2,084.01

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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.