Home / 4,985-6,880.92-2,888.72

Finding the Fourth Proportional to 4,985, 6,880.92 and 2,888.72

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Solution

The fourth proportional to 4,985, 6,880.92 and 2,888.72 is: 3,987.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985 : 6,880.92 = 2,888.72 : x
  2. Step 2: Convert to fraction form
    4,985/6,880.92 = 2,888.72/x
  3. Step 3: Cross multiply
    4,985x = 6,880.92 × 2,888.72
  4. Step 4: Simplify right side
    4,985x = 19,877,051.22
  5. Step 5: Solve for x
    x = 19,877,051.22/4,985
  6. Step 6: Final answer
    x = 3,987.37

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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.