Home / 7,117.83-10,686.47-4,779.36

Finding the Fourth Proportional to 7,117.83, 10,686.47 and 4,779.36

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Solution

The fourth proportional to 7,117.83, 10,686.47 and 4,779.36 is: 7,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.83 : 10,686.47 = 4,779.36 : x
  2. Step 2: Convert to fraction form
    7,117.83/10,686.47 = 4,779.36/x
  3. Step 3: Cross multiply
    7,117.83x = 10,686.47 × 4,779.36
  4. Step 4: Simplify right side
    7,117.83x = 51,074,463.36
  5. Step 5: Solve for x
    x = 51,074,463.36/7,117.83
  6. Step 6: Final answer
    x = 7,175.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.