Home / 3,130.51-4,320.59-1,871.16

Finding the Fourth Proportional to 3,130.51, 4,320.59 and 1,871.16

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Solution

The fourth proportional to 3,130.51, 4,320.59 and 1,871.16 is: 2,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.51 : 4,320.59 = 1,871.16 : x
  2. Step 2: Convert to fraction form
    3,130.51/4,320.59 = 1,871.16/x
  3. Step 3: Cross multiply
    3,130.51x = 4,320.59 × 1,871.16
  4. Step 4: Simplify right side
    3,130.51x = 8,084,515.18
  5. Step 5: Solve for x
    x = 8,084,515.18/3,130.51
  6. Step 6: Final answer
    x = 2,582.49

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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.