Home / 2,430.80-3,356.36-1,870.40

Finding the Fourth Proportional to 2,430.80, 3,356.36 and 1,870.40

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Solution

The fourth proportional to 2,430.80, 3,356.36 and 1,870.40 is: 2,582.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.80 : 3,356.36 = 1,870.40 : x
  2. Step 2: Convert to fraction form
    2,430.80/3,356.36 = 1,870.40/x
  3. Step 3: Cross multiply
    2,430.80x = 3,356.36 × 1,870.40
  4. Step 4: Simplify right side
    2,430.80x = 6,277,735.74
  5. Step 5: Solve for x
    x = 6,277,735.74/2,430.80
  6. Step 6: Final answer
    x = 2,582.58

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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.