Home / 3,715.36-5,130.64-2,782.24

Finding the Fourth Proportional to 3,715.36, 5,130.64 and 2,782.24

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Solution

The fourth proportional to 3,715.36, 5,130.64 and 2,782.24 is: 3,842.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.36 : 5,130.64 = 2,782.24 : x
  2. Step 2: Convert to fraction form
    3,715.36/5,130.64 = 2,782.24/x
  3. Step 3: Cross multiply
    3,715.36x = 5,130.64 × 2,782.24
  4. Step 4: Simplify right side
    3,715.36x = 14,274,671.83
  5. Step 5: Solve for x
    x = 14,274,671.83/3,715.36
  6. Step 6: Final answer
    x = 3,842.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.