Home / 2,875.48-4,312.32-927.28

Finding the Fourth Proportional to 2,875.48, 4,312.32 and 927.28

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Solution

The fourth proportional to 2,875.48, 4,312.32 and 927.28 is: 1,390.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.48 : 4,312.32 = 927.28 : x
  2. Step 2: Convert to fraction form
    2,875.48/4,312.32 = 927.28/x
  3. Step 3: Cross multiply
    2,875.48x = 4,312.32 × 927.28
  4. Step 4: Simplify right side
    2,875.48x = 3,998,728.09
  5. Step 5: Solve for x
    x = 3,998,728.09/2,875.48
  6. Step 6: Final answer
    x = 1,390.63

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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.