Home / 1,430.06-1,983.18-1,385.10

Finding the Fourth Proportional to 1,430.06, 1,983.18 and 1,385.10

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Solution

The fourth proportional to 1,430.06, 1,983.18 and 1,385.10 is: 1,920.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.06 : 1,983.18 = 1,385.10 : x
  2. Step 2: Convert to fraction form
    1,430.06/1,983.18 = 1,385.10/x
  3. Step 3: Cross multiply
    1,430.06x = 1,983.18 × 1,385.10
  4. Step 4: Simplify right side
    1,430.06x = 2,746,907.81
  5. Step 5: Solve for x
    x = 2,746,907.81/1,430.06
  6. Step 6: Final answer
    x = 1,920.84

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.