Home / 1,890.08-2,601.15-1,557.20

Finding the Fourth Proportional to 1,890.08, 2,601.15 and 1,557.20

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Solution

The fourth proportional to 1,890.08, 2,601.15 and 1,557.20 is: 2,143.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.08 : 2,601.15 = 1,557.20 : x
  2. Step 2: Convert to fraction form
    1,890.08/2,601.15 = 1,557.20/x
  3. Step 3: Cross multiply
    1,890.08x = 2,601.15 × 1,557.20
  4. Step 4: Simplify right side
    1,890.08x = 4,050,510.78
  5. Step 5: Solve for x
    x = 4,050,510.78/1,890.08
  6. Step 6: Final answer
    x = 2,143.04

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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.