Home / 7,358.40-10,155.60-5,587.20

Finding the Fourth Proportional to 7,358.40, 10,155.60 and 5,587.20

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Solution

The fourth proportional to 7,358.40, 10,155.60 and 5,587.20 is: 7,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,358.40 : 10,155.60 = 5,587.20 : x
  2. Step 2: Convert to fraction form
    7,358.40/10,155.60 = 5,587.20/x
  3. Step 3: Cross multiply
    7,358.40x = 10,155.60 × 5,587.20
  4. Step 4: Simplify right side
    7,358.40x = 56,741,368.32
  5. Step 5: Solve for x
    x = 56,741,368.32/7,358.40
  6. Step 6: Final answer
    x = 7,711.10

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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.