Home / 3,113.76-4,690.40-2,848.16

Finding the Fourth Proportional to 3,113.76, 4,690.40 and 2,848.16

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Solution

The fourth proportional to 3,113.76, 4,690.40 and 2,848.16 is: 4,290.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.76 : 4,690.40 = 2,848.16 : x
  2. Step 2: Convert to fraction form
    3,113.76/4,690.40 = 2,848.16/x
  3. Step 3: Cross multiply
    3,113.76x = 4,690.40 × 2,848.16
  4. Step 4: Simplify right side
    3,113.76x = 13,359,009.66
  5. Step 5: Solve for x
    x = 13,359,009.66/3,113.76
  6. Step 6: Final answer
    x = 4,290.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.