Home / 3,130.65-4,319.58-1,871.49

Finding the Fourth Proportional to 3,130.65, 4,319.58 and 1,871.49

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Solution

The fourth proportional to 3,130.65, 4,319.58 and 1,871.49 is: 2,582.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.65 : 4,319.58 = 1,871.49 : x
  2. Step 2: Convert to fraction form
    3,130.65/4,319.58 = 1,871.49/x
  3. Step 3: Cross multiply
    3,130.65x = 4,319.58 × 1,871.49
  4. Step 4: Simplify right side
    3,130.65x = 8,084,039.17
  5. Step 5: Solve for x
    x = 8,084,039.17/3,130.65
  6. Step 6: Final answer
    x = 2,582.23

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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.