Home / 5,079.47-7,619.70-1,792.40

Finding the Fourth Proportional to 5,079.47, 7,619.70 and 1,792.40

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Solution

The fourth proportional to 5,079.47, 7,619.70 and 1,792.40 is: 2,688.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.47 : 7,619.70 = 1,792.40 : x
  2. Step 2: Convert to fraction form
    5,079.47/7,619.70 = 1,792.40/x
  3. Step 3: Cross multiply
    5,079.47x = 7,619.70 × 1,792.40
  4. Step 4: Simplify right side
    5,079.47x = 13,657,550.28
  5. Step 5: Solve for x
    x = 13,657,550.28/5,079.47
  6. Step 6: Final answer
    x = 2,688.77

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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.