Home / 5,312.78-7,331.80-2,955.07

Finding the Fourth Proportional to 5,312.78, 7,331.80 and 2,955.07

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Solution

The fourth proportional to 5,312.78, 7,331.80 and 2,955.07 is: 4,078.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.78 : 7,331.80 = 2,955.07 : x
  2. Step 2: Convert to fraction form
    5,312.78/7,331.80 = 2,955.07/x
  3. Step 3: Cross multiply
    5,312.78x = 7,331.80 × 2,955.07
  4. Step 4: Simplify right side
    5,312.78x = 21,665,967.45
  5. Step 5: Solve for x
    x = 21,665,967.45/5,312.78
  6. Step 6: Final answer
    x = 4,078.08

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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.