Home / 1,916.12-2,639.58-1,325.64

Finding the Fourth Proportional to 1,916.12, 2,639.58 and 1,325.64

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Solution

The fourth proportional to 1,916.12, 2,639.58 and 1,325.64 is: 1,826.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.12 : 2,639.58 = 1,325.64 : x
  2. Step 2: Convert to fraction form
    1,916.12/2,639.58 = 1,325.64/x
  3. Step 3: Cross multiply
    1,916.12x = 2,639.58 × 1,325.64
  4. Step 4: Simplify right side
    1,916.12x = 3,499,132.83
  5. Step 5: Solve for x
    x = 3,499,132.83/1,916.12
  6. Step 6: Final answer
    x = 1,826.16

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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.