Home / 1,779.96-2,457.36-1,386.12

Finding the Fourth Proportional to 1,779.96, 2,457.36 and 1,386.12

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Solution

The fourth proportional to 1,779.96, 2,457.36 and 1,386.12 is: 1,913.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.96 : 2,457.36 = 1,386.12 : x
  2. Step 2: Convert to fraction form
    1,779.96/2,457.36 = 1,386.12/x
  3. Step 3: Cross multiply
    1,779.96x = 2,457.36 × 1,386.12
  4. Step 4: Simplify right side
    1,779.96x = 3,406,195.84
  5. Step 5: Solve for x
    x = 3,406,195.84/1,779.96
  6. Step 6: Final answer
    x = 1,913.64

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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.