Home / 2,985.71-4,486.13-1,890.59

Finding the Fourth Proportional to 2,985.71, 4,486.13 and 1,890.59

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Solution

The fourth proportional to 2,985.71, 4,486.13 and 1,890.59 is: 2,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.71 : 4,486.13 = 1,890.59 : x
  2. Step 2: Convert to fraction form
    2,985.71/4,486.13 = 1,890.59/x
  3. Step 3: Cross multiply
    2,985.71x = 4,486.13 × 1,890.59
  4. Step 4: Simplify right side
    2,985.71x = 8,481,423.06
  5. Step 5: Solve for x
    x = 8,481,423.06/2,985.71
  6. Step 6: Final answer
    x = 2,840.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.