Home / 5,259.30-7,888.98-2,139.36

Finding the Fourth Proportional to 5,259.30, 7,888.98 and 2,139.36

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Solution

The fourth proportional to 5,259.30, 7,888.98 and 2,139.36 is: 3,209.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,259.30 : 7,888.98 = 2,139.36 : x
  2. Step 2: Convert to fraction form
    5,259.30/7,888.98 = 2,139.36/x
  3. Step 3: Cross multiply
    5,259.30x = 7,888.98 × 2,139.36
  4. Step 4: Simplify right side
    5,259.30x = 16,877,368.25
  5. Step 5: Solve for x
    x = 16,877,368.25/5,259.30
  6. Step 6: Final answer
    x = 3,209.05

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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.