Home / 3,130.02-4,319.60-1,803.92

Finding the Fourth Proportional to 3,130.02, 4,319.60 and 1,803.92

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Solution

The fourth proportional to 3,130.02, 4,319.60 and 1,803.92 is: 2,489.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.02 : 4,319.60 = 1,803.92 : x
  2. Step 2: Convert to fraction form
    3,130.02/4,319.60 = 1,803.92/x
  3. Step 3: Cross multiply
    3,130.02x = 4,319.60 × 1,803.92
  4. Step 4: Simplify right side
    3,130.02x = 7,792,212.83
  5. Step 5: Solve for x
    x = 7,792,212.83/3,130.02
  6. Step 6: Final answer
    x = 2,489.51

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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.