Home / 2,916.08-4,025.08-1,985.12

Finding the Fourth Proportional to 2,916.08, 4,025.08 and 1,985.12

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Solution

The fourth proportional to 2,916.08, 4,025.08 and 1,985.12 is: 2,740.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.08 : 4,025.08 = 1,985.12 : x
  2. Step 2: Convert to fraction form
    2,916.08/4,025.08 = 1,985.12/x
  3. Step 3: Cross multiply
    2,916.08x = 4,025.08 × 1,985.12
  4. Step 4: Simplify right side
    2,916.08x = 7,990,266.81
  5. Step 5: Solve for x
    x = 7,990,266.81/2,916.08
  6. Step 6: Final answer
    x = 2,740.07

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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.