Home / 2,870.56-3,961.47-1,675.61

Finding the Fourth Proportional to 2,870.56, 3,961.47 and 1,675.61

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Solution

The fourth proportional to 2,870.56, 3,961.47 and 1,675.61 is: 2,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.56 : 3,961.47 = 1,675.61 : x
  2. Step 2: Convert to fraction form
    2,870.56/3,961.47 = 1,675.61/x
  3. Step 3: Cross multiply
    2,870.56x = 3,961.47 × 1,675.61
  4. Step 4: Simplify right side
    2,870.56x = 6,637,878.75
  5. Step 5: Solve for x
    x = 6,637,878.75/2,870.56
  6. Step 6: Final answer
    x = 2,312.40

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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.