Home / 3,130.84-4,316.65-2,290.87

Finding the Fourth Proportional to 3,130.84, 4,316.65 and 2,290.87

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Solution

The fourth proportional to 3,130.84, 4,316.65 and 2,290.87 is: 3,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.84 : 4,316.65 = 2,290.87 : x
  2. Step 2: Convert to fraction form
    3,130.84/4,316.65 = 2,290.87/x
  3. Step 3: Cross multiply
    3,130.84x = 4,316.65 × 2,290.87
  4. Step 4: Simplify right side
    3,130.84x = 9,888,883.99
  5. Step 5: Solve for x
    x = 9,888,883.99/3,130.84
  6. Step 6: Final answer
    x = 3,158.54

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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.