Home / 2,656.02-3,981.29-900.45

Finding the Fourth Proportional to 2,656.02, 3,981.29 and 900.45

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Solution

The fourth proportional to 2,656.02, 3,981.29 and 900.45 is: 1,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.02 : 3,981.29 = 900.45 : x
  2. Step 2: Convert to fraction form
    2,656.02/3,981.29 = 900.45/x
  3. Step 3: Cross multiply
    2,656.02x = 3,981.29 × 900.45
  4. Step 4: Simplify right side
    2,656.02x = 3,584,948.08
  5. Step 5: Solve for x
    x = 3,584,948.08/2,656.02
  6. Step 6: Final answer
    x = 1,349.74

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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.