Home / 4,985.90-7,479.06-1,865.60

Finding the Fourth Proportional to 4,985.90, 7,479.06 and 1,865.60

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Solution

The fourth proportional to 4,985.90, 7,479.06 and 1,865.60 is: 2,798.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.90 : 7,479.06 = 1,865.60 : x
  2. Step 2: Convert to fraction form
    4,985.90/7,479.06 = 1,865.60/x
  3. Step 3: Cross multiply
    4,985.90x = 7,479.06 × 1,865.60
  4. Step 4: Simplify right side
    4,985.90x = 13,952,934.34
  5. Step 5: Solve for x
    x = 13,952,934.34/4,985.90
  6. Step 6: Final answer
    x = 2,798.48

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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.