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Finding the Fourth Proportional to 5,779.40, 8,669.30 and 1,830.70

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Solution

The fourth proportional to 5,779.40, 8,669.30 and 1,830.70 is: 2,746.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.40 : 8,669.30 = 1,830.70 : x
  2. Step 2: Convert to fraction form
    5,779.40/8,669.30 = 1,830.70/x
  3. Step 3: Cross multiply
    5,779.40x = 8,669.30 × 1,830.70
  4. Step 4: Simplify right side
    5,779.40x = 15,870,887.51
  5. Step 5: Solve for x
    x = 15,870,887.51/5,779.40
  6. Step 6: Final answer
    x = 2,746.11

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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.