Home / 4,985.56-7,478.40-1,698.40

Finding the Fourth Proportional to 4,985.56, 7,478.40 and 1,698.40

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Solution

The fourth proportional to 4,985.56, 7,478.40 and 1,698.40 is: 2,547.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.56 : 7,478.40 = 1,698.40 : x
  2. Step 2: Convert to fraction form
    4,985.56/7,478.40 = 1,698.40/x
  3. Step 3: Cross multiply
    4,985.56x = 7,478.40 × 1,698.40
  4. Step 4: Simplify right side
    4,985.56x = 12,701,314.56
  5. Step 5: Solve for x
    x = 12,701,314.56/4,985.56
  6. Step 6: Final answer
    x = 2,547.62

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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.