Home / 8,079.79-12,119.70-2,457.51

Finding the Fourth Proportional to 8,079.79, 12,119.70 and 2,457.51

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Solution

The fourth proportional to 8,079.79, 12,119.70 and 2,457.51 is: 3,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.79 : 12,119.70 = 2,457.51 : x
  2. Step 2: Convert to fraction form
    8,079.79/12,119.70 = 2,457.51/x
  3. Step 3: Cross multiply
    8,079.79x = 12,119.70 × 2,457.51
  4. Step 4: Simplify right side
    8,079.79x = 29,784,211.06
  5. Step 5: Solve for x
    x = 29,784,211.06/8,079.79
  6. Step 6: Final answer
    x = 3,686.26

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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.