Home / 3,117.15-4,302.14-1,858.32

Finding the Fourth Proportional to 3,117.15, 4,302.14 and 1,858.32

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Solution

The fourth proportional to 3,117.15, 4,302.14 and 1,858.32 is: 2,564.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.15 : 4,302.14 = 1,858.32 : x
  2. Step 2: Convert to fraction form
    3,117.15/4,302.14 = 1,858.32/x
  3. Step 3: Cross multiply
    3,117.15x = 4,302.14 × 1,858.32
  4. Step 4: Simplify right side
    3,117.15x = 7,994,743.51
  5. Step 5: Solve for x
    x = 7,994,743.51/3,117.15
  6. Step 6: Final answer
    x = 2,564.76

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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.