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Finding the Fourth Proportional to 2,615.51, 3,611.72 and 1,779.32

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Solution

The fourth proportional to 2,615.51, 3,611.72 and 1,779.32 is: 2,457.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.51 : 3,611.72 = 1,779.32 : x
  2. Step 2: Convert to fraction form
    2,615.51/3,611.72 = 1,779.32/x
  3. Step 3: Cross multiply
    2,615.51x = 3,611.72 × 1,779.32
  4. Step 4: Simplify right side
    2,615.51x = 6,426,419.11
  5. Step 5: Solve for x
    x = 6,426,419.11/2,615.51
  6. Step 6: Final answer
    x = 2,457.04

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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.