Home / 3,570.40-4,916.46-2,779.84

Finding the Fourth Proportional to 3,570.40, 4,916.46 and 2,779.84

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Solution

The fourth proportional to 3,570.40, 4,916.46 and 2,779.84 is: 3,827.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.40 : 4,916.46 = 2,779.84 : x
  2. Step 2: Convert to fraction form
    3,570.40/4,916.46 = 2,779.84/x
  3. Step 3: Cross multiply
    3,570.40x = 4,916.46 × 2,779.84
  4. Step 4: Simplify right side
    3,570.40x = 13,666,972.17
  5. Step 5: Solve for x
    x = 13,666,972.17/3,570.40
  6. Step 6: Final answer
    x = 3,827.85

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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.